diff --git a/services/core/java/com/android/server/wm/ActivityStarter.java b/services/core/java/com/android/server/wm/ActivityStarter.java
index 0754a348740b9..8edc84fc8f379 100644
--- a/services/core/java/com/android/server/wm/ActivityStarter.java
+++ b/services/core/java/com/android/server/wm/ActivityStarter.java
@@ -168,7 +168,6 @@ class ActivityStarter {
 
     // The task display area to launch the activity onto, barring any strong reason to do otherwise.
     private TaskDisplayArea mPreferredTaskDisplayArea;
-    // The windowing mode to apply to the root task, if possible
     private int mPreferredWindowingMode;
 
     private Task mInTask;
@@ -1560,9 +1559,6 @@ class ActivityStarter {
         if (!mAvoidMoveToFront && mDoResume) {
             mTargetStack.getStack().moveToFront("reuseOrNewTask", targetTask);
             if (mOptions != null) {
-                if (mPreferredWindowingMode != WINDOWING_MODE_UNDEFINED) {
-                    mTargetStack.setWindowingMode(mPreferredWindowingMode);
-                }
                 if (mOptions.getTaskAlwaysOnTop()) {
                     mTargetStack.setAlwaysOnTop(true);
                 }