diff --git a/harness/sta.js b/harness/sta.js
index 42dd47e2eb..ac59d3a110 100644
--- a/harness/sta.js
+++ b/harness/sta.js
@@ -18,11 +18,12 @@ Test262Error.prototype.toString = function () {
   return "Test262Error: " + this.message;
 };
 
-var $ERROR;
-$ERROR = function $ERROR(message) {
-  throw new Test262Error(message);
+Test262Error.thrower = (...args) => {
+  throw new Test262Error(...args);
 };
 
+var $ERROR = Test262Error.thrower;
+
 function $DONOTEVALUATE() {
   throw "Test262: This statement should not be evaluated.";
 }