diff --git a/jerry-core/ecma/builtin-objects/ecma-builtin-reflect.inc.h b/jerry-core/ecma/builtin-objects/ecma-builtin-reflect.inc.h
index 17a623a5f..3527b0ee8 100644
--- a/jerry-core/ecma/builtin-objects/ecma-builtin-reflect.inc.h
+++ b/jerry-core/ecma/builtin-objects/ecma-builtin-reflect.inc.h
@@ -26,7 +26,7 @@ ROUTINE (LIT_MAGIC_STRING_GET, ECMA_REFLECT_OBJECT_GET, NON_FIXED, 2)
 ROUTINE (LIT_MAGIC_STRING_SET, ECMA_REFLECT_OBJECT_SET, NON_FIXED, 3)
 ROUTINE (LIT_MAGIC_STRING_HAS, ECMA_REFLECT_OBJECT_HAS, 2, 2)
 ROUTINE (LIT_MAGIC_STRING_DELETE_PROPERTY_UL, ECMA_REFLECT_OBJECT_DELETE_PROPERTY, 2, 2)
-ROUTINE (LIT_MAGIC_STRING_OWN_KEYS_UL, ECMA_REFLECT_OBJECT_OWN_KEYS, NON_FIXED, 2)
+ROUTINE (LIT_MAGIC_STRING_OWN_KEYS_UL, ECMA_REFLECT_OBJECT_OWN_KEYS, NON_FIXED, 1)
 ROUTINE (LIT_MAGIC_STRING_CONSTRUCT, ECMA_REFLECT_OBJECT_CONSTRUCT, NON_FIXED, 2)
 ROUTINE (LIT_MAGIC_STRING_GET_PROTOTYPE_OF_UL, ECMA_REFLECT_OBJECT_GET_PROTOTYPE_OF, 1, 1)
 ROUTINE (LIT_MAGIC_STRING_IS_EXTENSIBLE, ECMA_REFLECT_OBJECT_IS_EXTENSIBLE, 1, 1)
diff --git a/tests/test262-es6-excludelist.xml b/tests/test262-es6-excludelist.xml
index 276593022..a277e10e9 100644
--- a/tests/test262-es6-excludelist.xml
+++ b/tests/test262-es6-excludelist.xml
@@ -189,7 +189,6 @@
   <test id="built-ins/Reflect/getPrototypeOf/name.js"><reason></reason></test>
   <test id="built-ins/Reflect/has/name.js"><reason></reason></test>
   <test id="built-ins/Reflect/isExtensible/name.js"><reason></reason></test>
-  <test id="built-ins/Reflect/ownKeys/length.js"><reason></reason></test>
   <test id="built-ins/Reflect/ownKeys/name.js"><reason></reason></test>
   <test id="built-ins/Reflect/preventExtensions/always-return-true-from-ordinary-object.js"><reason></reason></test>
   <test id="built-ins/Reflect/preventExtensions/name.js"><reason></reason></test>