diff --git a/services/core/java/com/android/server/wm/TaskDisplayArea.java b/services/core/java/com/android/server/wm/TaskDisplayArea.java
index 8cbd553fbebd8..3cec3aa6a2056 100644
--- a/services/core/java/com/android/server/wm/TaskDisplayArea.java
+++ b/services/core/java/com/android/server/wm/TaskDisplayArea.java
@@ -1225,7 +1225,7 @@ final class TaskDisplayArea extends DisplayArea<WindowContainer> {
 
         // Clear last paused activity if focused root task changed while sleeping, so that the
         // top activity of current focused task can be resumed.
-        if (mDisplayContent.isSleeping()) {
+        if (mDisplayContent.isSleeping() && currentFocusedTask != null) {
             currentFocusedTask.clearLastPausedActivity();
         }