diff --git a/server/notification-providers/whapi.js b/server/notification-providers/whapi.js
index 1ac8bdc8a..956c265e4 100644
--- a/server/notification-providers/whapi.js
+++ b/server/notification-providers/whapi.js
@@ -24,7 +24,7 @@ class Whapi extends NotificationProvider {
                 "body": msg,
             };
 
-            let url = (notification.whapiApiUrl || "https://gate.whapi.cloud/").replace(/(?<!\/)\/*$/, "") + "/messages/text";
+            let url = (notification.whapiApiUrl || "https://gate.whapi.cloud/").replace(/([^\/])\/+$/, "$1") + "/messages/text";
 
             await axios.post(url, data, config);