diff --git a/github/github.go b/github/github.go
index 7069a18e053..013ce8715ab 100644
--- a/github/github.go
+++ b/github/github.go
@@ -468,6 +468,7 @@ func (c *Client) copy() *Client {
 }
 
 // NewClientWithEnvProxy enhances NewClient with the HttpProxy env.
+// Deprecated: Use NewClient(nil) instead.
 func NewClientWithEnvProxy() *Client {
 	return NewClient(&http.Client{Transport: &http.Transport{Proxy: http.ProxyFromEnvironment}})
 }