diff --git a/src/types.ts b/src/types.ts
index 11f4311..f567db8 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -100,7 +100,7 @@ export interface IManagerOptions {
    * dummy: force create empty store
    * empty (default): don't render component if any of the stores not created
    */
-  failedCreationStrategy: 'none' | 'dummy' | 'empty';
+  failedCreationStrategy?: 'none' | 'dummy' | 'empty';
 }
 
 export type TAnyStore = IStore | IStorePersisted;