diff --git a/compiler/parse/tests/snapshots/pass/empty_platform_header.header.result-ast b/compiler/parse/tests/snapshots/pass/empty_platform_header.header.result-ast
index 6821a8a463..736414d3a8 100644
--- a/compiler/parse/tests/snapshots/pass/empty_platform_header.header.result-ast
+++ b/compiler/parse/tests/snapshots/pass/empty_platform_header.header.result-ast
@@ -18,14 +18,6 @@ Platform {
         packages: [],
         imports: [],
         provides: [],
-        effects: Effects {
-            spaces_before_effects_keyword: [],
-            spaces_after_effects_keyword: [],
-            spaces_after_type_name: [],
-            effect_shortname: "fx",
-            effect_type_name: "Blah",
-            entries: [],
-        },
         before_header: [],
         after_platform_keyword: [],
         before_requires: [],
diff --git a/compiler/parse/tests/snapshots/pass/empty_platform_header.header.roc b/compiler/parse/tests/snapshots/pass/empty_platform_header.header.roc
index ce0e4468a5..04d71d738d 100644
--- a/compiler/parse/tests/snapshots/pass/empty_platform_header.header.roc
+++ b/compiler/parse/tests/snapshots/pass/empty_platform_header.header.roc
@@ -1 +1 @@
-platform "rtfeldman/blah" requires {} { main : {} } exposes [] packages {} imports [] provides [] effects fx.Blah {}
\ No newline at end of file
+platform "rtfeldman/blah" requires {} { main : {} } exposes [] packages {} imports [] provides []
diff --git a/compiler/parse/tests/snapshots/pass/function_effect_types.header.result-ast b/compiler/parse/tests/snapshots/pass/function_effect_types.header.result-ast
index 08f163c4f0..9075843166 100644
--- a/compiler/parse/tests/snapshots/pass/function_effect_types.header.result-ast
+++ b/compiler/parse/tests/snapshots/pass/function_effect_types.header.result-ast
@@ -43,105 +43,6 @@ Platform {
                 "mainForHost",
             ),
         ],
-        effects: Effects {
-            spaces_before_effects_keyword: [
-                Newline,
-            ],
-            spaces_after_effects_keyword: [],
-            spaces_after_type_name: [
-                Newline,
-            ],
-            effect_shortname: "fx",
-            effect_type_name: "Effect",
-            entries: [
-                @208-228 SpaceBefore(
-                    TypedIdent {
-                        ident: @208-215 "getLine",
-                        spaces_before_colon: [],
-                        ann: @218-228 Apply(
-                            "",
-                            "Effect",
-                            [
-                                @225-228 Apply(
-                                    "",
-                                    "Str",
-                                    [],
-                                ),
-                            ],
-                        ),
-                    },
-                    [
-                        Newline,
-                    ],
-                ),
-                @242-268 SpaceBefore(
-                    TypedIdent {
-                        ident: @242-249 "putLine",
-                        spaces_before_colon: [],
-                        ann: @259-268 Function(
-                            [
-                                @252-255 Apply(
-                                    "",
-                                    "Str",
-                                    [],
-                                ),
-                            ],
-                            @259-268 Apply(
-                                "",
-                                "Effect",
-                                [
-                                    @266-268 Record {
-                                        fields: [],
-                                        ext: None,
-                                    },
-                                ],
-                            ),
-                        ),
-                    },
-                    [
-                        Newline,
-                    ],
-                ),
-                @282-318 SpaceBefore(
-                    SpaceAfter(
-                        TypedIdent {
-                            ident: @282-294 "twoArguments",
-                            spaces_before_colon: [],
-                            ann: @309-318 Function(
-                                [
-                                    @297-300 Apply(
-                                        "",
-                                        "Int",
-                                        [],
-                                    ),
-                                    @302-305 Apply(
-                                        "",
-                                        "Int",
-                                        [],
-                                    ),
-                                ],
-                                @309-318 Apply(
-                                    "",
-                                    "Effect",
-                                    [
-                                        @316-318 Record {
-                                            fields: [],
-                                            ext: None,
-                                        },
-                                    ],
-                                ),
-                            ),
-                        },
-                        [
-                            Newline,
-                        ],
-                    ),
-                    [
-                        Newline,
-                    ],
-                ),
-            ],
-        },
         before_header: [],
         after_platform_keyword: [],
         before_requires: [
diff --git a/compiler/parse/tests/snapshots/pass/nonempty_platform_header.header.result-ast b/compiler/parse/tests/snapshots/pass/nonempty_platform_header.header.result-ast
index 5dddd9d923..38b5d6f691 100644
--- a/compiler/parse/tests/snapshots/pass/nonempty_platform_header.header.result-ast
+++ b/compiler/parse/tests/snapshots/pass/nonempty_platform_header.header.result-ast
@@ -34,16 +34,6 @@ Platform {
                 "mainForHost",
             ),
         ],
-        effects: Effects {
-            spaces_before_effects_keyword: [
-                Newline,
-            ],
-            spaces_after_effects_keyword: [],
-            spaces_after_type_name: [],
-            effect_shortname: "fx",
-            effect_type_name: "Effect",
-            entries: [],
-        },
         before_header: [],
         after_platform_keyword: [],
         before_requires: [
diff --git a/compiler/parse/tests/snapshots/pass/requires_type.header.result-ast b/compiler/parse/tests/snapshots/pass/requires_type.header.result-ast
index 2195dcac19..35b2f64345 100644
--- a/compiler/parse/tests/snapshots/pass/requires_type.header.result-ast
+++ b/compiler/parse/tests/snapshots/pass/requires_type.header.result-ast
@@ -41,16 +41,6 @@ Platform {
                 "mainForHost",
             ),
         ],
-        effects: Effects {
-            spaces_before_effects_keyword: [
-                Newline,
-            ],
-            spaces_after_effects_keyword: [],
-            spaces_after_type_name: [],
-            effect_shortname: "fx",
-            effect_type_name: "Effect",
-            entries: [],
-        },
         before_header: [],
         after_platform_keyword: [],
         before_requires: [