diff --git a/metropolis/cli/metroctl/cmd_certs.go b/metropolis/cli/metroctl/cmd_certs.go
index d914c83..8475546 100644
--- a/metropolis/cli/metroctl/cmd_certs.go
+++ b/metropolis/cli/metroctl/cmd_certs.go
@@ -48,5 +48,5 @@
 		}
 		log.Println("Wrote files to current dir: cert.pem, key.pem")
 	},
-	Args: cobra.NoArgs,
+	Args: PrintUsageOnWrongArgs(cobra.NoArgs),
 }