diff --git a/client/src/reducers/presentationReducer.test.ts b/client/src/reducers/presentationReducer.test.ts
index f62bf2e9a1e089e3f45d51f15b39cedf7fc42a55..10362e687c6ea431dfb221a2c995324d384c92f3 100644
--- a/client/src/reducers/presentationReducer.test.ts
+++ b/client/src/reducers/presentationReducer.test.ts
@@ -13,7 +13,10 @@ const initialState = {
   },
   activeSlideId: -1,
   code: '',
-  timer: null,
+  timer: {
+    value: null,
+    enabled: false,
+  },
 }
 
 it('should return the initial state', () => {