diff --git a/oeffi/build.gradle b/oeffi/build.gradle
index 0740d4a..d9ee8e1 100644
--- a/oeffi/build.gradle
+++ b/oeffi/build.gradle
@@ -42,6 +42,7 @@ android {
         all {
             minifyEnabled true
             shrinkResources true
+            crunchPngs false
             proguardFile 'proguard.cfg'
         }
         debug {