diff --git a/templates/docker-compose.yml.j2 b/templates/docker-compose.yml.j2
index f2a92a3..59e118c 100644
--- a/templates/docker-compose.yml.j2
+++ b/templates/docker-compose.yml.j2
@@ -47,7 +47,7 @@ services:
       --keep-alive={{ nim_waku_keep_alive | to_json }}
       --max-connections={{ nim_waku_p2p_max_connections }}
       --dns4-domain-name={{ nim_waku_dns4_domain_name }}
-      --topics={{ nim_waku_topics | join(" ") }}
+      --topics='{{ nim_waku_topics | join(" ") }}'
 {% if "store" in nim_waku_protocols_enabled %}
       --store-message-db-url='sqlite:///data/store.sqlite3'
       --store-message-retention-policy={{ nim_waku_store_message_retention_policy }}