diff --git a/services/core/java/com/android/server/am/ActiveServices.java b/services/core/java/com/android/server/am/ActiveServices.java
index bebcd4a120796..7dd75df5252ac 100644
--- a/services/core/java/com/android/server/am/ActiveServices.java
+++ b/services/core/java/com/android/server/am/ActiveServices.java
@@ -371,7 +371,8 @@ public final class ActiveServices {
                     }
                     // This app knows it is in the new model where this operation is not
                     // allowed, so tell it what has happened.
-                    return new ComponentName("?", "app is in background");
+                    UidRecord uidRec = mAm.mActiveUids.get(r.appInfo.uid);
+                    return new ComponentName("?", "app is in background uid " + uidRec);
                 }
             } finally {
                 Binder.restoreCallingIdentity(token);