diff --git a/androidbrowserhelper/src/main/java/com/google/androidbrowserhelper/trusted/LauncherActivity.java b/androidbrowserhelper/src/main/java/com/google/androidbrowserhelper/trusted/LauncherActivity.java
index 8aa9aba7..f114124a 100644
--- a/androidbrowserhelper/src/main/java/com/google/androidbrowserhelper/trusted/LauncherActivity.java
+++ b/androidbrowserhelper/src/main/java/com/google/androidbrowserhelper/trusted/LauncherActivity.java
@@ -371,7 +371,7 @@ protected void onDestroy() {
     }
 
     @Override
-    protected void onSaveInstanceState(Bundle outState) {
+    protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putBoolean(BROWSER_WAS_LAUNCHED_KEY, mBrowserWasLaunched);
     }