diff --git a/playbooks/groups/loopabull.yml b/playbooks/groups/loopabull.yml
index 8adaadfc07..701d1ae725 100644
--- a/playbooks/groups/loopabull.yml
+++ b/playbooks/groups/loopabull.yml
@@ -93,5 +93,5 @@
   tasks:
     - name: Enable fedmsg-rabbitmq-serializer
       copy:
-        src: files/loopabull/serializer.py
-        dest: /etc/fedmsg.d/serializer.py
+        src: "{{files}}/loopabull/serializer.py"
+        dest: "/etc/fedmsg.d/serializer.py"