diff --git a/tasks/haproxy_networks.yml b/tasks/haproxy_networks.yml
index 8a2589a..cf3d0a4 100644
--- a/tasks/haproxy_networks.yml
+++ b/tasks/haproxy_networks.yml
@@ -12,7 +12,7 @@
       name: '{{ item }}'
       connected:
         - 'haproxy_haproxy'
-      append: yes
+      appends: yes
     with_items: '{{ docker_swarm_haproxy_networks }}'
 
   when: docker_swarm_manager_main_node | bool