diff --git a/sources/Coturn_config_rotate.sh b/sources/Coturn_config_rotate.sh
index 4d40a87..ce7d6c5 100644
--- a/sources/Coturn_config_rotate.sh
+++ b/sources/Coturn_config_rotate.sh
@@ -13,14 +13,14 @@ if [ -n "$public_ip4" ] && ynh_validate_ip4 --ip_address="$public_ip4"
 then
     external_IP_line="${external_IP_line/'__IPV4__'/$public_ip4}"
 else
-    external_IP_line="${external_IP_line/'__IPV4__,'/}"
+    external_IP_line="${external_IP_line/'__IPV4__/'/}"
 fi
 
 if [ -n "$public_ip6" ] && ynh_validate_ip6 --ip_address="$public_ip6"
 then
     external_IP_line="${external_IP_line/'__IPV6__'/$public_ip6}"
 else
-    external_IP_line="${external_IP_line/',__IPV6__'/}"
+    external_IP_line="${external_IP_line/'/__IPV6__'/}"
 fi
 
 old_config_line=$(egrep "^external-ip=.*\$" "/etc/turnserver.conf")