diff --git a/metadata/org.mozilla.mozstumbler.txt b/metadata/org.mozilla.mozstumbler.txt
index dd4b278aea..8b757a2b40 100644
--- a/metadata/org.mozilla.mozstumbler.txt
+++ b/metadata/org.mozilla.mozstumbler.txt
@@ -19,12 +19,12 @@ Repo:https://github.com/mozilla/MozStumbler.git
 Build:0.8.0,18
     commit=b6c090b
     gradle=yes
-    prebuild=sed -i 's/debuggable true/debuggable false/' build.gradle
+    prebuild=sed -i -e 's/debuggable true/debuggable false/' -e '/task wrapper/,/^}$/d' build.gradle
 
 Build:0.8.1,19
     commit=98498e3
     gradle=yes
-    prebuild=sed -i 's/debuggable true/debuggable false/' build.gradle
+    prebuild=sed -i -e 's/debuggable true/debuggable false/' -e '/task wrapper/,/^}$/d' build.gradle
 
 Auto Update Mode:None
 Update Check Mode:Tags