diff --git a/build.gradle b/build.gradle
index fb6e7ff4b..4f4e43188 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,7 +48,7 @@ android {
         }
         release {
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard.txt'
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard.pro'
             signingConfig signingConfigs.release
         }
         // https://code.google.com/p/android/issues/detail?id=123771
diff --git a/proguard.txt b/proguard.pro
similarity index 52%
rename from proguard.txt
rename to proguard.pro
index c4b6b60a7..148a2629c 100644
--- a/proguard.txt
+++ b/proguard.pro
@@ -1,9 +1,3 @@
--dontshrink
-
 # appcompat-v21 not compatible with some samsung 4.2.2 roms
 # https://code.google.com/p/android/issues/detail?id=78377
--keep class !android.support.v7.internal.view.menu.**,** {*;}
-
--keepattributes **
-
--dontwarn **
+-keep class !android.support.v7.internal.view.menu.**