diff --git a/validation/dns.md b/validation/dns.md
index 548b7a4..6e2df54 100644
--- a/validation/dns.md
+++ b/validation/dns.md
@@ -1,6 +1,6 @@
-## Cache snooping
+### Cache snooping
 host -r www.google.com <nameserverIP>
 
-## Open DNS resolution against a DNS server.
+### Open DNS resolution against a DNS server.
 Supply a hostname not cached or inside a company owned domain.
 nslookup www.nsa.gov <nameserverIP>