diff --git a/roles/jenkins/slave/tasks/main.yml b/roles/jenkins/slave/tasks/main.yml
index e2c1225f5d..0ba36b000b 100644
--- a/roles/jenkins/slave/tasks/main.yml
+++ b/roles/jenkins/slave/tasks/main.yml
@@ -44,7 +44,7 @@
   - packages
 
 - name: create jenkins user
-  action: user name=jenkins state=present createhome=yes system=no
+  action: user name=jenkins state=present createhome=yes system=no groups=mock
   tags:
   - jenkins
   - jenkins/slave