diff --git a/punycode.js b/punycode.js
index 3b80a72..7c4ee09 100644
--- a/punycode.js
+++ b/punycode.js
@@ -64,7 +64,7 @@
 	 * @returns {Error} Throws a `RangeError` with the applicable error message.
 	 */
 	function error(type) {
-		throw RangeError(errors[type]);
+		throw new RangeError(errors[type]);
 	}
 
 	/**