diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp
index 9819f3c..a335eea 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp
@@ -54,6 +54,8 @@
     defaults: [
         "VehicleHalDefaults",
     ],
+    // Need root to use vendor lib: libgrpc++.
+    require_root: true,
     test_suites: ["device-tests"],
 }