diff --git a/docs/main/prerequesites.md b/docs/main/prerequesites.md
index 9112104..3374a39 100644
--- a/docs/main/prerequesites.md
+++ b/docs/main/prerequesites.md
@@ -64,7 +64,7 @@ IP6Tables (IPv6)
 ```bash
 ip6tables -I INPUT -p udp -m udp --sport 546:547 --dport 546:547 -j ACCEPT
 ```
-FirewallD
+####FirewallD
 
 <TODO: Explain how to use FTLDNS with firewall-cmd>
 
@@ -72,4 +72,4 @@ FirewallD
 firewall-cmd --permanent --add-service=http --add-service=dns --add-service=dhcp --add-service=dhcpv6
 firewall-cmd --reload
 ```
-{!abbreviations.md!}
\ No newline at end of file
+{!abbreviations.md!}