diff --git a/roles/web-app-bigbluebutton/templates/env.j2 b/roles/web-app-bigbluebutton/templates/env.j2
index 662fdd6d..45468fa3 100644
--- a/roles/web-app-bigbluebutton/templates/env.j2
+++ b/roles/web-app-bigbluebutton/templates/env.j2
@@ -43,7 +43,9 @@ DOMAIN={{ domain }}
 
 # IP
 EXTERNAL_IPv4={{ networks.internet.ip4 }}
-EXTERNAL_IPv6={{ networks.internet.ip6 if BBB_IP6_ENABLED else '' }}
+{% if BBB_IP6_ENABLED %}
+EXTERNAL_IPv6={{ networks.internet.ip6 }}
+{% endif %}
 
 # STUN SERVER
 # stun.freeswitch.org