diff --git a/README.md b/README.md
index 1673edc..441df53 100644
--- a/README.md
+++ b/README.md
@@ -35,9 +35,9 @@ See also the [`grpcurl` talk at GopherCon 2018](https://www.youtube.com/watch?v=
 operate bi-directional streaming methods interactively by running `grpcurl` from an
 interactive terminal and using stdin as the request body!
 
-`grpcurl` supports both plain-text and TLS servers and has numerous options for TLS
-configuration. It also supports mutual TLS, where the client is required to present a
-client certificate.
+`grpcurl` supports both secure/TLS server _and_ plain-text (i.e. no TLS) and has
+numerous options for TLS configuration. It also supports mutual TLS, where the client
+is required to present a client certificate.
 
 As mentioned above, `grpcurl` works seamlessly if the server supports the reflection
 service. If not, you can supply the `.proto` source files or you can supply protoset
@@ -91,6 +91,9 @@ that requires no client certs and supports server reflection is the simplest thi
 do with `grpcurl`. This minimal invocation sends an empty request body:
 ```shell
 grpcurl grpc.server.com:443 my.custom.server.Service/Method
+
+# no TLS
+grpcurl -plaintext grpc.server.com:80 my.custom.server.Service/Method
 ```
 
 To send a non-empty request, use the `-d` argument. Note that all arguments must come