diff --git a/app/build.gradle b/app/build.gradle
index 07d2e78e..f49f838c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,9 +4,6 @@ android {
     compileSdkVersion 21
     buildToolsVersion "21.1.2"
 
-    compileSdkVersion rootProject.ext.compileSdkVersion
-    buildToolsVersion rootProject.ext.buildToolsVersion
-
     defaultConfig {
         applicationId "nodomain.freeyourgadget.gadgetbridge"
         minSdkVersion 19
diff --git a/build.gradle b/build.gradle
index 2765df79..6356aabd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,8 +17,3 @@ allprojects {
         jcenter()
     }
 }
-
-ext {
-    compileSdkVersion = 21
-    buildToolsVersion = "21.1.2"
-}
\ No newline at end of file