diff --git a/tasks/main.yml b/tasks/main.yml
index 5354840740ce2b7f1b511cc55cfee04e9b737e5b..1717a17a05bd8075fe857a1e32a72612a2f09cf7 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -27,8 +27,8 @@
     - name: User keys
       include_tasks: user_keys.yml
       with_flattened:
-        - {{ admins }}
-        - {{ jailusers }}
+        - '{{( admins }})'
+        - '{{( jailusers }})'
       loop_control:
         loop_var: username
       tags: