diff --git a/MyTracks/proguard.cfg b/MyTracks/proguard.cfg
index 458f78e22..8a6087a72 100644
--- a/MyTracks/proguard.cfg
+++ b/MyTracks/proguard.cfg
@@ -25,7 +25,7 @@
 -keep public class * extends android.app.Activity
 -keep public class * extends android.app.Application
 -keep public class * extends android.app.Service
--keep public class * extends android.app,backup.BackupAgent
+-keep public class * extends android.app.backup.BackupAgent
 -keep public class * extends android.content.BroadcastReceiver
 -keep public class * extends android.content.ContentProvider
 -keep public class * extends android.preference.Preference