diff --git a/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java b/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java
index 73f1705..4810f4f 100644
--- a/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java
+++ b/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java
@@ -47,6 +47,7 @@
 import android.os.IDeviceIdleController;
 import android.os.IInterface;
 import android.os.Parcel;
+import android.os.Process;
 import android.os.RemoteException;
 import android.os.ResultReceiver;
 import android.os.ServiceManager;
@@ -345,7 +346,7 @@
     }
 
     private static boolean isCallerSystem() {
-        return getCallingUserId() == UserHandle.USER_SYSTEM;
+        return Binder.getCallingUid() == Process.SYSTEM_UID;
     }
 
     private ServiceConnection createServiceConnection(