diff --git a/README.md b/README.md
index cad41d9..4a7e4be 100644
--- a/README.md
+++ b/README.md
@@ -643,7 +643,7 @@ Load balancers can route traffic based on various metrics, including:
 
 Layer 4 load balancers look at info at the [transport layer](#communication) to decide how to distribute requests.  Generally, this involves the source, destination IP addresses, and ports in the header, but not the contents of the packet.  Layer 4 load balancers forward network packets to and from the upstream server, performing [Network Address Translation (NAT)](https://www.nginx.com/resources/glossary/layer-4-load-balancing/).
 
-### layer 7 load balancing
+### Layer 7 load balancing
 
 Layer 7 load balancers look at the [application layer](#communication) to decide how to distribute requests.  This can involve contents of the header, message, and cookies.  Layer 7 load balancers terminates network traffic, reads the message, makes a load-balancing decision, then opens a connection to the selected server.  For example, a layer 7 load balancer can direct video traffic to servers that host videos while directing more sensitive user billing traffic to security-hardened servers.