diff --git a/luci-app-zapret/htdocs/luci-static/resources/view/zapret/tools.js b/luci-app-zapret/htdocs/luci-static/resources/view/zapret/tools.js
index 61d11c6..5f8fd5f 100644
--- a/luci-app-zapret/htdocs/luci-static/resources/view/zapret/tools.js
+++ b/luci-app-zapret/htdocs/luci-static/resources/view/zapret/tools.js
@@ -525,6 +525,10 @@ return baseclass.extend({
                 if (value != "" && value != "\t") {
                     value = '\n' + value + '\n';
                     if (this.multiline == 2) {
+                        if (value.includes("'") || value.includes('"')) {
+                            alert(_('Unable to save the contents') + ':\n' + _('text cannot contain quotes!'));
+                            return false;
+                        }
                         value = value.replace(/"/g, '');
                         value = value.replace(/'/g, '');
                     }