diff --git a/tasks/main.yml b/tasks/main.yml
index b4d7338..dbcb5be 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -30,8 +30,8 @@
   file:
     path: "{{ item }}"
     state: directory
-    owner: {{ certbot_webuser }}
-    group: {{ certbot_webuser }}
+    owner: '{{ certbot_webuser }}'
+    group: '{{ certbot_webuser }}'
     mode: 0755
   with_items:
     - /var/www/.well-known