diff --git a/harness/sta.js b/harness/sta.js
index 42dd47e2eb..8ad77739e5 100644
--- a/harness/sta.js
+++ b/harness/sta.js
@@ -24,5 +24,6 @@ $ERROR = function $ERROR(message) {
 };
 
 function $DONOTEVALUATE() {
+  // This function MUST NOT throw a Test262Error.
   throw "Test262: This statement should not be evaluated.";
 }