diff --git a/services/core/java/com/android/server/wm/ActivityStarter.java b/services/core/java/com/android/server/wm/ActivityStarter.java
index 9ad62af2d4176..f224cc7082f65 100644
--- a/services/core/java/com/android/server/wm/ActivityStarter.java
+++ b/services/core/java/com/android/server/wm/ActivityStarter.java
@@ -2459,6 +2459,7 @@ class ActivityStarter {
 
         mInTask = null;
         mInTaskFragment = null;
+        mAddingToTaskFragment = null;
         mAddingToTask = false;
 
         mSourceRootTask = null;