diff --git a/src/Updux.ts b/src/Updux.ts
index 170a7af..aaa2714 100644
--- a/src/Updux.ts
+++ b/src/Updux.ts
@@ -256,6 +256,7 @@ export class Updux<
 
     addEffect(action, effect) {
         this.#effects = [...this.#effects, [action, effect]];
+        return effect;
     }
 
     splatSubscriber(store, inner, splatReaction) {