diff --git a/test/flutter_inapp_purchase_test.dart b/test/flutter_inapp_purchase_test.dart
index bcfde999..0c2acf74 100644
--- a/test/flutter_inapp_purchase_test.dart
+++ b/test/flutter_inapp_purchase_test.dart
@@ -741,6 +741,7 @@ void main() {
             } else if (m['type'] == 'subs') {
               return resultSubs;
             }
+            return null;
           });
         });