diff --git a/tasks/swarm_node.yml b/tasks/swarm_node.yml
index 42b2a03..482c47c 100644
--- a/tasks/swarm_node.yml
+++ b/tasks/swarm_node.yml
@@ -48,7 +48,7 @@
     docker_node:
       hostname: '{{ ansible_hostname }}'
       labels:
-        {{ item.key }}: '{{ item.value }}'
+        "{{ item.key }}": '{{ item.value }}'
       labels_state: '{{ docker_label_state_mode }}'
     with_items: '{{ docker_node_labels }}'