diff --git a/CHANGELOG.md b/CHANGELOG.md
index f16430f2e22..f03681d1cc8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ constraint][language version] lower bound to 3.9 or greater (`sdk: '^3.9.0'`).
 
 - Add the [`switch_on_type`][] lint rule.
 - Add the [`unnecessary_unawaited`][] lint rule.
+- Add an assist to convert a field formal parameter to a normal parameter.
 
 [`switch_on_type`]: http://dart.dev/lints/switch_on_type
 [`unnecessary_unawaited`]: http://dart.dev/lints/unnecessary_unawaited
diff --git a/pkg/analysis_server/lib/src/services/correction/dart/convert_field_formal_to_normal.dart b/pkg/analysis_server/lib/src/services/correction/dart/convert_field_formal_to_normal.dart
index fb434a3aa03..f437ba737d2 100644
--- a/pkg/analysis_server/lib/src/services/correction/dart/convert_field_formal_to_normal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/dart/convert_field_formal_to_normal.dart
@@ -23,7 +23,7 @@ class ConvertFieldFormalToNormal extends ResolvedCorrectionProducer {
   @override
   Future<void> compute(ChangeBuilder builder) async {
     var parameter = node;
-    if (parameter is! FieldFormalParameter) {
+    if (parameter is! FieldFormalParameter || parameter.parameters != null) {
       return;
     }
     var field = parameter.declaredFragment?.element.field2;
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_field_formal_to_normal_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_field_formal_to_normal_test.dart
index 7c3add339b5..785f820d0f6 100644
--- a/pkg/analysis_server/test/src/services/correction/assist/convert_field_formal_to_normal_test.dart
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_field_formal_to_normal_test.dart
@@ -281,19 +281,30 @@ class C {
 ''');
   }
 
-  Future<void> test_withFunctionTypedField() async {
+  Future<void> test_withFunctionTypedField_functionTypedParameter() async {
     await resolveTestCode('''
 class C {
   void Function() f;
 
   C({required this.f^()});
 }
+''');
+    await assertNoAssist();
+  }
+
+  Future<void> test_withFunctionTypedField_normalParameter() async {
+    await resolveTestCode('''
+class C {
+  void Function() f;
+
+  C({required this.f^});
+}
 ''');
     await assertHasAssist('''
 class C {
   void Function() f;
 
-  C({required void Function() f()}) : f = f;
+  C({required void Function() f}) : f = f;
 }
 ''');
   }