diff --git a/docs/user-guide/tls.md b/docs/user-guide/tls.md
index 6ee9a5d2af..29148afa1c 100644
--- a/docs/user-guide/tls.md
+++ b/docs/user-guide/tls.md
@@ -11,7 +11,7 @@
 
 ## Default SSL Certificate
 
-NGINX provides the option to configure a server as a catch-all with [server name _](http://nginx.org/en/docs/http/server_names.html) for requests that do not match any of the configured server names. This configuration works without issues for HTTP traffic.
+NGINX provides the option to configure a server as a catch-all with [server_name](http://nginx.org/en/docs/http/server_names.html) for requests that do not match any of the configured server names. This configuration works without issues for HTTP traffic.
 In case of HTTPS, NGINX requires a certificate.
 For this reason the Ingress controller provides the flag `--default-ssl-certificate`. The secret behind this flag contains the default certificate to be used in the mentioned scenario. If this flag is not provided NGINX will use a self signed certificate.