diff --git a/web/utils/firewall.py b/web/utils/firewall.py
index 7a1906a75..1cdf02df1 100644
--- a/web/utils/firewall.py
+++ b/web/utils/firewall.py
@@ -72,7 +72,7 @@ class Firewall(object):
 
             if not is_same:
                 t = {}
-                t['port'] = info[0]
+                t['port'] = info[0].replace('-',':')
                 t['protocol'] = info[1]
                 ports_all.append(t)