diff --git a/wercker.yml b/wercker.yml
index f49c8482558..0ee93536fa7 100644
--- a/wercker.yml
+++ b/wercker.yml
@@ -28,5 +28,5 @@ build:
         cwd: grafana/
     - grunt:
         cwd: grafana/
-        tasks: release --mode==backend
+        tasks: release --mode=backend