diff --git a/scripts/pi-hole/js/groups-common.js b/scripts/pi-hole/js/groups-common.js
index 6fb24eea..3e177a22 100644
--- a/scripts/pi-hole/js/groups-common.js
+++ b/scripts/pi-hole/js/groups-common.js
@@ -135,7 +135,7 @@ function validateMAC(mac) {
 }
 
 function validateHostname(name) {
-  var namevalidator = new RegExp(/[^<>;\"]/);
+  var namevalidator = new RegExp(/[^<>;"]/);
   return namevalidator.test(name);
 }