diff --git a/compiler/parser/src/tokenizer/mod.rs b/compiler/parser/src/tokenizer/mod.rs
index 69fce18a11..2b99a86027 100644
--- a/compiler/parser/src/tokenizer/mod.rs
+++ b/compiler/parser/src/tokenizer/mod.rs
@@ -159,19 +159,14 @@ mod tests {
         )
         *
         **
-        **=
-        *=
         +
-        +=
         ,
         -
-        -=
         ->
         _
         .
         ..
         /
-        /=
         :
         ;
         <
@@ -199,7 +194,7 @@ mod tests {
 
             assert_eq!(
                 output,
-                r#"'a' '😭' "test" "test{}test" "test{}" "{}test" "test{" "test}" "test{test" "test}test" "te{{}}" aleo1qnr4dkkvkgfqph0vzc3y6z2eu975wnpz2925ntjccd5cfqxtyu8sta57j8 test_ident 12345 address bool const else false field for function group i128 i64 i32 i16 i8 if in input let mut return string test true u128 u64 u32 u16 u8 console ! != && ( ) * ** **= *= + += , - -= -> _ . .. / /= : ; < <= = == > >= [ ] { { } } || ? // test
+                r#"'a' '😭' "test" "test{}test" "test{}" "{}test" "test{" "test}" "test{test" "test}test" "te{{}}" aleo1qnr4dkkvkgfqph0vzc3y6z2eu975wnpz2925ntjccd5cfqxtyu8sta57j8 test_ident 12345 address bool const else false field for function group i128 i64 i32 i16 i8 if in input let mut return string test true u128 u64 u32 u16 u8 console ! != && ( ) * ** + , - -> _ . .. / : ; < <= = == > >= [ ] { { } } || ? // test
  /* test */ // "#
             );
         });
diff --git a/tests/expectations/parser/parser/expression/token_format.leo.out b/tests/expectations/parser/parser/expression/token_format.leo.out
index c329e3e9ef..2aca9b16fe 100644
--- a/tests/expectations/parser/parser/expression/token_format.leo.out
+++ b/tests/expectations/parser/parser/expression/token_format.leo.out
@@ -25,11 +25,11 @@ outputs:
   - "Error [EPAR0370009]: unexpected string: expected 'expression', got '**'\n    --> test:1:1\n     |\n   1 | **\n     | ^^"
   - "Error [EPAR0370009]: unexpected string: expected 'expression', got '/'\n    --> test:1:1\n     |\n   1 | /\n     | ^"
   - "Error [EPAR0370009]: unexpected string: expected 'expression', got '='\n    --> test:1:1\n     |\n   1 | =\n     | ^"
-  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '+='\n    --> test:1:1\n     |\n   1 | +=\n     | ^^"
-  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '-='\n    --> test:1:1\n     |\n   1 | -=\n     | ^^"
-  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '*='\n    --> test:1:1\n     |\n   1 | *=\n     | ^^"
-  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '/='\n    --> test:1:1\n     |\n   1 | /=\n     | ^^"
-  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '**='\n    --> test:1:1\n     |\n   1 | **=\n     | ^^^"
+  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '+'\n    --> test:1:1\n     |\n   1 | +=\n     | ^"
+  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '='\n    --> test:1:2\n     |\n   1 | -=\n     |  ^"
+  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '*'\n    --> test:1:1\n     |\n   1 | *=\n     | ^"
+  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '/'\n    --> test:1:1\n     |\n   1 | /=\n     | ^"
+  - "Error [EPAR0370009]: unexpected string: expected 'expression', got '**'\n    --> test:1:1\n     |\n   1 | **=\n     | ^^"
   - "Error [EPAR0370003]: unexpected EOF\n    --> test:1:1\n     |\n   1 | (\n     | ^"
   - "Error [EPAR0370009]: unexpected string: expected 'expression', got ')'\n    --> test:1:1\n     |\n   1 | )\n     | ^"
   - "Error [EPAR0370009]: unexpected string: expected 'expression', got '['\n    --> test:1:1\n     |\n   1 | [\n     | ^"
diff --git a/tests/expectations/parser/parser/statement/assign.leo.out b/tests/expectations/parser/parser/statement/assign.leo.out
index ac520eb734..b87db92545 100644
--- a/tests/expectations/parser/parser/statement/assign.leo.out
+++ b/tests/expectations/parser/parser/statement/assign.leo.out
@@ -87,397 +87,3 @@ outputs:
         col_stop: 8
         path: ""
         content: x = x();
-  - Assign:
-      operation: Add
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += expr;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x += expr;
-      value:
-        Identifier: "{\"name\":\"expr\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":10,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += expr;\\\"}\"}"
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 10
-        path: ""
-        content: x += expr;
-  - Assign:
-      operation: Add
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += x+y;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x += x+y;
-      value:
-        Binary:
-          left:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += x+y;\\\"}\"}"
-          right:
-            Identifier: "{\"name\":\"y\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":8,\\\"col_stop\\\":9,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += x+y;\\\"}\"}"
-          op: Add
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x += x+y;
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x += x+y;
-  - Assign:
-      operation: Add
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += x();\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x += x();
-      value:
-        Call:
-          function:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x += x();\\\"}\"}"
-          arguments: []
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x += x();
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x += x();
-  - Assign:
-      operation: Sub
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= expr;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x -= expr;
-      value:
-        Identifier: "{\"name\":\"expr\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":10,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= expr;\\\"}\"}"
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 10
-        path: ""
-        content: x -= expr;
-  - Assign:
-      operation: Sub
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= x+y;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x -= x+y;
-      value:
-        Binary:
-          left:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= x+y;\\\"}\"}"
-          right:
-            Identifier: "{\"name\":\"y\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":8,\\\"col_stop\\\":9,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= x+y;\\\"}\"}"
-          op: Add
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x -= x+y;
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x -= x+y;
-  - Assign:
-      operation: Sub
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= x();\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x -= x();
-      value:
-        Call:
-          function:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x -= x();\\\"}\"}"
-          arguments: []
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x -= x();
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x -= x();
-  - Assign:
-      operation: Mul
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= expr;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x *= expr;
-      value:
-        Identifier: "{\"name\":\"expr\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":10,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= expr;\\\"}\"}"
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 10
-        path: ""
-        content: x *= expr;
-  - Assign:
-      operation: Mul
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= x+y;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x *= x+y;
-      value:
-        Binary:
-          left:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= x+y;\\\"}\"}"
-          right:
-            Identifier: "{\"name\":\"y\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":8,\\\"col_stop\\\":9,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= x+y;\\\"}\"}"
-          op: Add
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x *= x+y;
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x *= x+y;
-  - Assign:
-      operation: Mul
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= x();\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x *= x();
-      value:
-        Call:
-          function:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x *= x();\\\"}\"}"
-          arguments: []
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x *= x();
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x *= x();
-  - Assign:
-      operation: Div
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= expr;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x /= expr;
-      value:
-        Identifier: "{\"name\":\"expr\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":10,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= expr;\\\"}\"}"
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 10
-        path: ""
-        content: x /= expr;
-  - Assign:
-      operation: Div
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= x+y;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x /= x+y;
-      value:
-        Binary:
-          left:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= x+y;\\\"}\"}"
-          right:
-            Identifier: "{\"name\":\"y\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":8,\\\"col_stop\\\":9,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= x+y;\\\"}\"}"
-          op: Add
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x /= x+y;
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x /= x+y;
-  - Assign:
-      operation: Div
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= x();\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x /= x();
-      value:
-        Call:
-          function:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":6,\\\"col_stop\\\":7,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x /= x();\\\"}\"}"
-          arguments: []
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 6
-            col_stop: 9
-            path: ""
-            content: x /= x();
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 9
-        path: ""
-        content: x /= x();
-  - Assign:
-      operation: Pow
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x **= expr;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x **= expr;
-      value:
-        Identifier: "{\"name\":\"expr\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":7,\\\"col_stop\\\":11,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x **= expr;\\\"}\"}"
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 11
-        path: ""
-        content: x **= expr;
-  - Assign:
-      operation: Pow
-      assignee:
-        identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":1,\\\"col_stop\\\":2,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x **= x+y;\\\"}\"}"
-        accesses: []
-        span:
-          line_start: 1
-          line_stop: 1
-          col_start: 1
-          col_stop: 2
-          path: ""
-          content: x **= x+y;
-      value:
-        Binary:
-          left:
-            Identifier: "{\"name\":\"x\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":7,\\\"col_stop\\\":8,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x **= x+y;\\\"}\"}"
-          right:
-            Identifier: "{\"name\":\"y\",\"span\":\"{\\\"line_start\\\":1,\\\"line_stop\\\":1,\\\"col_start\\\":9,\\\"col_stop\\\":10,\\\"path\\\":\\\"\\\",\\\"content\\\":\\\"x **= x+y;\\\"}\"}"
-          op: Add
-          span:
-            line_start: 1
-            line_stop: 1
-            col_start: 7
-            col_stop: 10
-            path: ""
-            content: x **= x+y;
-      span:
-        line_start: 1
-        line_stop: 1
-        col_start: 1
-        col_stop: 10
-        path: ""
-        content: x **= x+y;
diff --git a/tests/parser/statement/assign.leo b/tests/parser/statement/assign.leo
index 6d368cc6fd..323adebec3 100644
--- a/tests/parser/statement/assign.leo
+++ b/tests/parser/statement/assign.leo
@@ -8,31 +8,3 @@ x = expr;
 x = x+y;
 
 x = x();
-
-x += expr;
-
-x += x+y;
-
-x += x();
-
-x -= expr;
-
-x -= x+y;
-
-x -= x();
-
-x *= expr;
-
-x *= x+y;
-
-x *= x();
-
-x /= expr;
-
-x /= x+y;
-
-x /= x();
-
-x **= expr;
-
-x **= x+y;