diff --git a/services/core/java/com/android/server/wm/WindowContainer.java b/services/core/java/com/android/server/wm/WindowContainer.java
index cae5b148222f2..5c7b4167aec41 100644
--- a/services/core/java/com/android/server/wm/WindowContainer.java
+++ b/services/core/java/com/android/server/wm/WindowContainer.java
@@ -906,7 +906,7 @@ class WindowContainer<E extends WindowContainer> extends ConfigurationContainer<
      * container.
      */
     boolean canCustomizeAppTransition() {
-        return !WindowManagerService.sDisableCustomTaskAnimationProperty;
+        return false;
     }
 
     /**
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index c4a518395eeae..9b67db62b62e2 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -398,21 +398,6 @@ public class WindowManagerService extends IWindowManager.Stub
 
     static final int LOGTAG_INPUT_FOCUS = 62001;
 
-    /**
-     * Restrict ability of activities overriding transition animation in a way such that
-     * an activity can do it only when the transition happens within a same task.
-     *
-     * @see android.app.Activity#overridePendingTransition(int, int)
-     */
-    private static final String DISABLE_CUSTOM_TASK_ANIMATION_PROPERTY =
-            "persist.wm.disable_custom_task_animation";
-
-    /**
-     * @see #DISABLE_CUSTOM_TASK_ANIMATION_PROPERTY
-     */
-    static boolean sDisableCustomTaskAnimationProperty =
-            SystemProperties.getBoolean(DISABLE_CUSTOM_TASK_ANIMATION_PROPERTY, true);
-
     /**
      * Use WMShell for app transition.
      */