diff --git a/extension/auth/client.go b/extension/auth/client.go
index cf1bdb55fb8..d1855d8aece 100644
--- a/extension/auth/client.go
+++ b/extension/auth/client.go
@@ -25,7 +25,7 @@ type Client interface {
 	PerRPCCredentials() (credentials.PerRPCCredentials, error)
 }
 
-// ClientOption represents the possible options for NewServerAuthenticator.
+// ClientOption represents the possible options for NewClient.
 type ClientOption func(*defaultClient)
 
 // ClientRoundTripperFunc specifies the function that returns a RoundTripper that can be used to authenticate HTTP requests.