diff --git a/js/src/tests/js1_8_5/extensions/compound-assign-const.js b/js/src/tests/js1_8_5/extensions/compound-assign-const.js
index 80f6b137069..01a8b290fbb 100644
--- a/js/src/tests/js1_8_5/extensions/compound-assign-const.js
+++ b/js/src/tests/js1_8_5/extensions/compound-assign-const.js
@@ -13,7 +13,7 @@ print(BUGNUMBER + ": " + summary);
 
 const x = 3;
 x += 2;
-assertEq(x, 2);
+assertEq(x, 3);
 
 /******************************************************************************/