diff --git a/rootfs/etc/s6-overlay/scripts/03-settings b/rootfs/etc/s6-overlay/scripts/03-settings
index 18f6e64..d6bd804 100755
--- a/rootfs/etc/s6-overlay/scripts/03-settings
+++ b/rootfs/etc/s6-overlay/scripts/03-settings
@@ -205,7 +205,7 @@ if chk_enabled "${FAM_ENABLE_ACARS}"; then
   sed -i "/${search}/c\\${replace}" /var/www/flightairmap/htdocs/require/settings.php
 fi
 
-if chk_enabled "${FAM_GLOBAL_URL}"; then
+if [[ -n "${FAM_GLOBAL_URL}" ]]; then
   search="\$globalURL = '"
   replace="\$globalURL = '${FAM_GLOBAL_URL}';"
   sed -i "/${search}/c\\${replace}" /var/www/flightairmap/htdocs/require/settings.php