diff --git a/examples/route_guide/README.md b/examples/route_guide/README.md
index 0365009e..02a43f19 100644
--- a/examples/route_guide/README.md
+++ b/examples/route_guide/README.md
@@ -22,7 +22,7 @@ $ go run client/client.go
 
 # Optional command line flags
 The server and client both take optional command line flags. For example, the
-client and server run without TLS by default. To enable TSL:
+client and server run without TLS by default. To enable TLS:
 
 ```sh
 $ go run server/server.go -tls=true