diff --git a/metadata/org.c_base.c_beam.txt b/metadata/org.c_base.c_beam.txt
index c42082e0cb..981abeddd6 100644
--- a/metadata/org.c_base.c_beam.txt
+++ b/metadata/org.c_base.c_beam.txt
@@ -46,9 +46,10 @@ Build:1.5.3,26
 
 Build:1.6.1,28
     commit=1.6.1
+    subdir=app
     gradle=noGCM
-    prebuild=rm libs/gcm.jar && \
-        sed -i -e '/google-services/d'  -e '/withFirebaseCompile/d' build.gradle
+    prebuild=sed -i -e '/com.google.gms/d' ../build.gradle build.gradle && \
+        sed -i -e '/withGCMImplementation/d' build.gradle
 
 Auto Update Mode:Version %v
 Update Check Mode:Tags