diff --git a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
index 6255aab53d8..11187e6100b 100644
--- a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
@@ -1240,7 +1240,7 @@ class AssistProcessor {
           : '';
       String getterCode = '$eol2  ${typeNameCode}get $name => _$name;';
       String setterCode = '$eol2'
-          '  void set $name($typeNameCode$name) {$eol'
+          '  set $name($typeNameCode$name) {$eol'
           '    _$name = $name;$eol'
           '  }';
       builder.addSimpleInsertion(fieldDeclaration.end, getterCode + setterCode);
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
index 9f9b9c70775..ed9775de308 100644
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ b/pkg/analysis_server/test/services/correction/assist_test.dart
@@ -2578,7 +2578,7 @@ class A {
 
   int get test => _test;
 
-  void set test(int test) {
+  set test(int test) {
     _test = test;
   }
   A(this._test);
@@ -2604,7 +2604,7 @@ class A {
 
   get test => _test;
 
-  void set test(test) {
+  set test(test) {
     _test = test;
   }
 }