diff --git a/argument_test.go b/argument_test.go
index abc457e..b45d2d2 100644
--- a/argument_test.go
+++ b/argument_test.go
@@ -382,7 +382,7 @@ func Test_arg_name(t *testing.T) {
 				sname: "d",
 				lname: "dir",
 			},
-			want: "-d|--dir",
+			want: "-d | --dir",
 		},
 	}
 	for _, tt := range tests {