diff --git a/services/core/java/com/android/server/wm/Transition.java b/services/core/java/com/android/server/wm/Transition.java
index 2c10af4..65001f4 100644
--- a/services/core/java/com/android/server/wm/Transition.java
+++ b/services/core/java/com/android/server/wm/Transition.java
@@ -3401,7 +3401,6 @@
      * Applies the new configuration for the changed displays. Returns the activities that should
      * check whether to deliver the new configuration to clients.
      */
-    @Nullable
     void applyDisplayChangeIfNeeded(@NonNull ArraySet<WindowContainer<?>> activitiesMayChange) {
         for (int i = mParticipants.size() - 1; i >= 0; --i) {
             final WindowContainer<?> wc = mParticipants.valueAt(i);