diff --git a/tasks/vhost.yml b/tasks/vhost.yml
index 33ae7f7..2514a0b 100644
--- a/tasks/vhost.yml
+++ b/tasks/vhost.yml
@@ -2,7 +2,10 @@
 
 - name: FAIL | Check vhost and SSL/TLS support
   fail: msg="Missmatch configuration for vhost {{ item.name if item.name is string else item.name[0] }}"
-  when: 'https' in item.proto and item.ssl_name is not defined
+  when: >
+    item.proto is defined and
+    'https' in item.proto and
+    item.ssl_name is not defined
   with_items: nginx_vhosts
 
 - name: FILE | Create root directory