diff --git a/config/glider.conf.example b/config/glider.conf.example
index e0c15f6..fb70285 100644
--- a/config/glider.conf.example
+++ b/config/glider.conf.example
@@ -104,7 +104,7 @@ checkduration=30
 # we can specify different upstream dns server in rule file for different destinations
 
 # Setup a dns forwarding server
-dns://53
+dns=:53
 # global remote dns server (you can specify different dns server in rule file)
 dnsserver=8.8.8.8:53