diff --git a/test/built-ins/RegExp/S15.10.2.10_A5.1_T1.js b/test/built-ins/RegExp/S15.10.2.10_A5.1_T1.js
index 8805e44e56968650c53b6d86f9cfacd3afb7c544..85263a4463d38bedb31efc0abf26e422dc7156d4 100644
--- a/test/built-ins/RegExp/S15.10.2.10_A5.1_T1.js
+++ b/test/built-ins/RegExp/S15.10.2.10_A5.1_T1.js
@@ -13,6 +13,6 @@ description: "Tested string is \"~`!@#$%^&*()-+={[}]|\\\\:;'<,>./?\" + '\"'"
 var non_ident = "~`!@#$%^&*()-+={[}]|\\:;'<,>./?" + '"';
 for (var k = 0; k < non_ident.length; ++k) {
   var arr = new RegExp("\\" + non_ident[k], "g").exec(non_ident);
-  assert.notSameValue(null, "No match for character: " + non_ident[k]);
+  assert.notSameValue(arr, null, "No match for character: " + non_ident[k]);
   assert.sameValue(arr[0], non_ident[k]);
 }