diff --git a/src/resolvers/QueryResolvers.ts b/src/resolvers/QueryResolvers.ts
index e676218..98c8965 100644
--- a/src/resolvers/QueryResolvers.ts
+++ b/src/resolvers/QueryResolvers.ts
@@ -17,7 +17,8 @@ export const QueryResolvers: Resolvers<ServerContext> = {
       };
     },
     isNotificationScheduled: async (_parent, args, contextValue, _info) => {
-      return false;
+      const notificationData = args.input;
+      return contextValue.notificationService.isNotificationScheduled(notificationData);
     }
   },
 }