diff --git a/Examples/CaseStudies/SwiftUICaseStudies/03-Effects-Timers.swift b/Examples/CaseStudies/SwiftUICaseStudies/03-Effects-Timers.swift
index 7b143f608de8..40287d3f4935 100644
--- a/Examples/CaseStudies/SwiftUICaseStudies/03-Effects-Timers.swift
+++ b/Examples/CaseStudies/SwiftUICaseStudies/03-Effects-Timers.swift
@@ -30,6 +30,7 @@ struct Timers {
     Reduce { state, action in
       switch action {
       case .onDisappear:
+        state.isTimerActive = false
         return .cancel(id: CancelID.timer)
 
       case .timerTicked:
diff --git a/Examples/CaseStudies/SwiftUICaseStudiesTests/03-Effects-TimersTests.swift b/Examples/CaseStudies/SwiftUICaseStudiesTests/03-Effects-TimersTests.swift
index eac2593e5f00..1f26298fc7d0 100644
--- a/Examples/CaseStudies/SwiftUICaseStudiesTests/03-Effects-TimersTests.swift
+++ b/Examples/CaseStudies/SwiftUICaseStudiesTests/03-Effects-TimersTests.swift
@@ -41,5 +41,15 @@ struct TimersTests {
     await store.send(.toggleTimerButtonTapped) {
       $0.isTimerActive = false
     }
+    await store.send(.toggleTimerButtonTapped) {
+      $0.isTimerActive = true
+    }
+    await clock.advance(by: .seconds(1))
+    await store.receive(\.timerTicked) {
+      $0.secondsElapsed = 7
+    }
+    await store.send(.onDisappear) {
+      $0.isTimerActive = false
+    }
   }
 }