diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityWindowManager.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityWindowManager.java
index 0e25a06b4727b..baed181ebd436 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityWindowManager.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityWindowManager.java
@@ -201,7 +201,8 @@ public class AccessibilityWindowManager {
         private List<AccessibilityWindowInfo> mWindows;
         private boolean mTrackingWindows = false;
         private boolean mHasWatchOutsideTouchWindow;
-        private int mProxyDisplayAccessibilityFocusedWindow;
+        private int mProxyDisplayAccessibilityFocusedWindow =
+                AccessibilityWindowInfo.UNDEFINED_WINDOW_ID;
         private boolean mIsProxy;
 
         /**