diff --git a/src/util/helper.py b/src/util/helper.py
index af65f727..8c7c6fff 100644
--- a/src/util/helper.py
+++ b/src/util/helper.py
@@ -325,7 +325,10 @@ def openBrowser(agent):
     if agent and agent != "False":
         print(f"Opening browser: {agent}...")
         ui_ip = config.ui_ip if config.ui_ip != "*" else "127.0.0.1"
-        url = f'http://{ui_ip}:{config.ui_port}/{config.homepage}'
+        if ':' in ui_ip: # IPv6
+            url = f'http://[{ui_ip}]:{config.ui_port}/{config.homepage}'
+        else: # IPv4
+            url = f'http://{ui_ip}:{config.ui_port}/{config.homepage}'
         try:
             import subprocess
             return subprocess.Popen([config.open_browser, url])