diff --git a/js/tests/e4x/Regress/regress-277935.js b/js/tests/e4x/Regress/regress-277935.js
index 1af633f7f21d..e9ed87d06293 100644
--- a/js/tests/e4x/Regress/regress-277935.js
+++ b/js/tests/e4x/Regress/regress-277935.js
@@ -46,4 +46,10 @@ try {
 } catch (e) {
 }
 
+try {
+    eval('msg..s += 0');
+    SHOULD_THROW(2);
+} catch (e) {
+}
+
 END();