diff --git a/keymaster/4.0/default/android.hardware.keymaster@4.0-service.rc b/keymaster/4.0/default/android.hardware.keymaster@4.0-service.rc
index 2ce439e..2adfd88 100644
--- a/keymaster/4.0/default/android.hardware.keymaster@4.0-service.rc
+++ b/keymaster/4.0/default/android.hardware.keymaster@4.0-service.rc
@@ -1,4 +1,5 @@
 service vendor.keymaster-4-0 /vendor/bin/hw/android.hardware.keymaster@4.0-service
+    interface android.hardware.keymaster@4.0::IKeymasterDevice default
     class early_hal
     user system
     group system drmrpc