diff --git a/metadata/org.gege.caldavsyncadapter.txt b/metadata/org.gege.caldavsyncadapter.txt
index 0487633d1f..543e6e0a51 100644
--- a/metadata/org.gege.caldavsyncadapter.txt
+++ b/metadata/org.gege.caldavsyncadapter.txt
@@ -16,7 +16,7 @@ https://owncloud_server/remote.php/caldav/principals/user_name
 Repo Type:git
 Repo:https://github.com/gggard/AndroidCaldavSyncAdapater.git
 
-Build Version:1.6,7,v1.6,subdir=CalDAVSyncAdapter,prebuild=\
+Build Version:1.6,7,!unknown source of some libs v1.6,subdir=CalDAVSyncAdapter,prebuild=\
 sed -i 's@/libs/@libs/@' proguard-project.txt
 
 Auto Update Mode:None