diff --git a/lib/client-api/src/story_store.ts b/lib/client-api/src/story_store.ts
index 84b39a2004fa..ae881b45e94e 100644
--- a/lib/client-api/src/story_store.ts
+++ b/lib/client-api/src/story_store.ts
@@ -499,7 +499,7 @@ export default class StoryStore {
       }
       return acc;
     }, {} as Args);
-    if (defaultArgs !== {}) {
+    if (Object.keys(defaultArgs).length > 0) {
       argTypeDefaultValueWarning();
     }