diff --git a/roles/nginx/application/tasks/main.yml b/roles/nginx/application/tasks/main.yml
index 4d7bef4..036c9ab 100644
--- a/roles/nginx/application/tasks/main.yml
+++ b/roles/nginx/application/tasks/main.yml
@@ -81,7 +81,7 @@
     port: "{{ item }}"
     proto: tcp
   with_items:
-    - 80
-    - 443
+    - "80"
+    - "443"
 
 # TODO Configure global log