diff --git a/app/src/test/java/org/mozilla/fenix/browser/OpenInAppOnboardingObserverTest.kt b/app/src/test/java/org/mozilla/fenix/browser/OpenInAppOnboardingObserverTest.kt
index 179d524d85..ce0cf7f013 100644
--- a/app/src/test/java/org/mozilla/fenix/browser/OpenInAppOnboardingObserverTest.kt
+++ b/app/src/test/java/org/mozilla/fenix/browser/OpenInAppOnboardingObserverTest.kt
@@ -23,6 +23,7 @@ import mozilla.components.browser.state.store.BrowserStore
 import mozilla.components.feature.app.links.AppLinksUseCases
 import mozilla.components.support.test.ext.joinBlocking
 import mozilla.components.support.test.rule.MainCoroutineRule
+import org.junit.After
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -77,6 +78,11 @@ class OpenInAppOnboardingObserverTest {
         every { openInAppOnboardingObserver.createInfoBanner() } returns infoBanner
     }
 
+    @After
+    fun teardown() {
+        openInAppOnboardingObserver.stop()
+    }
+
     @Test
     fun `GIVEN user configured to open links in external app WHEN page finishes loading THEN do not show banner`() {
         every { settings.openLinksInExternalApp } returns true
diff --git a/app/src/test/java/org/mozilla/fenix/shortcut/PwaOnboardingObserverTest.kt b/app/src/test/java/org/mozilla/fenix/shortcut/PwaOnboardingObserverTest.kt
index 0c277d2056..1002264cae 100644
--- a/app/src/test/java/org/mozilla/fenix/shortcut/PwaOnboardingObserverTest.kt
+++ b/app/src/test/java/org/mozilla/fenix/shortcut/PwaOnboardingObserverTest.kt
@@ -20,6 +20,7 @@ import mozilla.components.browser.state.store.BrowserStore
 import mozilla.components.feature.pwa.WebAppUseCases
 import mozilla.components.support.test.ext.joinBlocking
 import mozilla.components.support.test.rule.MainCoroutineRule
+import org.junit.After
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -66,6 +67,11 @@ class PwaOnboardingObserverTest {
         )
     }
 
+    @After
+    fun teardown() {
+        pwaOnboardingObserver.stop()
+    }
+
     @Test
     fun `GIVEN cfr should not yet be shown WHEN installable page is loaded THEN counter is incremented`() {
         every { webAppUseCases.isInstallable() } returns true