diff --git a/Android.bp b/Android.bp
index e6b767e..7046837 100644
--- a/Android.bp
+++ b/Android.bp
@@ -98,6 +98,7 @@
         "backend/backendmanager.cpp",
         "backend/backend.cpp",
         "backend/backendclient.cpp",
+        "backend/backendrcardu.cpp",
     ],
 }