diff --git a/rootfs/etc/nginx/template/nginx.tmpl b/rootfs/etc/nginx/template/nginx.tmpl
index 30a129452..b3df55df2 100755
--- a/rootfs/etc/nginx/template/nginx.tmpl
+++ b/rootfs/etc/nginx/template/nginx.tmpl
@@ -155,7 +155,7 @@ http {
     ';
     {{ end }}
     
-    {{ if not $all.Cfg.ModsecuritySnippet }}
+    {{ if (empty $all.Cfg.ModsecuritySnippet) }}
     modsecurity_rules_file /etc/nginx/modsecurity/modsecurity.conf;
     {{ end }}