diff --git a/proguard.cfg b/proguard.cfg
index 8c67ee3..a646c29 100755
--- a/proguard.cfg
+++ b/proguard.cfg
@@ -5,7 +5,6 @@
 -dontwarn scala.**
 
 -dontnote javax.xml.**
--dontnote org.acra.DeviceFeaturesCollector
 -dontnote org.w3c.dom.**
 -dontnote org.xml.sax.**
 -dontnote scala.Enumeration
@@ -35,6 +34,7 @@
 -keep public class * extends android.content.ContentProvider
 -keep public class * extends android.preference.Preference
 -keep public class * extends android.view.View
+# -keep public class com.android.vending.licensing.ILicensingService
 
 -keepclasseswithmembernames class * {
     native <methods>;