diff --git a/tests/expectations/parser/parser/expression/literal/char_fail.leo.out b/tests/expectations/parser/parser/expression/literal/char_fail.leo.out
index d32df523c8..30bb2b78e6 100644
--- a/tests/expectations/parser/parser/expression/literal/char_fail.leo.out
+++ b/tests/expectations/parser/parser/expression/literal/char_fail.leo.out
@@ -9,6 +9,13 @@ outputs:
   - "    --> test:1:1\n     |\n   1 | '\\x7'\n     | ^\n     |\n     = unexpected token: '''"
   - "    --> test:1:1\n     |\n   1 | '\\x7g'\n     | ^\n     |\n     = unexpected token: '''"
   - "    --> test:1:1\n     |\n   1 | '\\xz'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\x80'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\xc1'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\xc2'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\xDF'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\xC0'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\xe0'\n     | ^\n     |\n     = unexpected token: '''"
+  - "    --> test:1:1\n     |\n   1 | '\\x9f'\n     | ^\n     |\n     = unexpected token: '''"
   - "    --> test:1:1\n     |\n   1 | 'abcdefg'\n     | ^\n     |\n     = unexpected token: '''"
   - "    --> test:1:1\n     |\n   1 | '\\t\\t'\n     | ^\n     |\n     = unexpected token: '''"
   - "    --> test:1:1\n     |\n   1 | '\\a'\n     | ^\n     |\n     = unexpected token: '''"
diff --git a/tests/parser/expression/literal/char_fail.leo b/tests/parser/expression/literal/char_fail.leo
index fc12b5ca9a..982cc3f801 100644
--- a/tests/parser/expression/literal/char_fail.leo
+++ b/tests/parser/expression/literal/char_fail.leo
@@ -13,6 +13,13 @@ expectation: Fail
 '\x7'
 '\x7g'
 '\xz'
+'\x80'
+'\xc1'
+'\xc2'
+'\xDF'
+'\xC0'
+'\xe0'
+'\x9f'
 
 'abcdefg'