diff --git a/udp2raw-openvpn-config-guide.md b/udp2raw-openvpn-config-guide.md
index 3eba927..bdd0a2f 100644
--- a/udp2raw-openvpn-config-guide.md
+++ b/udp2raw-openvpn-config-guide.md
@@ -94,5 +94,6 @@ txqueuelen 4000     ##### suggested
 ```
 
 # to transparently redirect traffic
-check:
+Check:
+
 https://github.com/wangyu-/UDPspeeder/wiki/UDPspeeder-openvpn-config-guide
\ No newline at end of file