diff --git a/OpenKeychain/build.gradle b/OpenKeychain/build.gradle
index 93c8f5c17..134a90c28 100644
--- a/OpenKeychain/build.gradle
+++ b/OpenKeychain/build.gradle
@@ -252,6 +252,12 @@ android {
         }
     }
 
+    variantFilter { variant ->
+        if(variant.buildType.name.equals('debug') && variant.getFlavors().get(0).name.equals('google')) {
+            variant.setIgnore(true);
+        }
+    }
+
     /*
      * To sign release build, create file gradle.properties in ~/.gradle/ with this content:
      *
diff --git a/README.md b/README.md
index 87550081a..97f0ef3fb 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,8 @@ Select SDK Platform for API levels 25.
 6. Execute ``./gradlew assembleFdroidDebug``
 7. You can install the app with ``adb install -r OpenKeychain/build/outputs/apk/OpenKeychain-fdroid-debug.apk``
 
+The "google" flavor is only used to include donations via Play Store, for development the "fdroid" flavor should be used.
+
 ### Run Tests
 1. Use OpenJDK instead of Oracle JDK
 2. Execute ``./gradlew clean testFdroidDebugUnitTest --continue``