diff --git a/src/libjsparser/parser.c b/src/libjsparser/parser.c
index bfcfc2e7a..5d47effe7 100644
--- a/src/libjsparser/parser.c
+++ b/src/libjsparser/parser.c
@@ -689,9 +689,15 @@ parse_property_name (void)
   {
     case TOK_NAME:
     case TOK_STRING:
+    {
+      STACK_PUSH (IDX, next_temp_name ());
+      DUMP_OPCODE_3 (assignment, ID(1), OPCODE_ARG_TYPE_STRING, token_data ());
+      break;
+    }
     case TOK_NUMBER:
     {
-      STACK_PUSH (IDX, token_data ());
+      STACK_PUSH (IDX, next_temp_name ());
+      DUMP_OPCODE_3 (assignment, ID(1), OPCODE_ARG_TYPE_NUMBER, token_data ());
       break;
     }
     case TOK_SMALL_INT:
diff --git a/tests/jerry/array.js b/tests/jerry/N.array.js
similarity index 100%
rename from tests/jerry/array.js
rename to tests/jerry/N.array.js
diff --git a/tests/jerry/object_literal.js b/tests/jerry/N.object_literal.js
similarity index 89%
rename from tests/jerry/object_literal.js
rename to tests/jerry/N.object_literal.js
index 9ead044cd..c5648577d 100644
--- a/tests/jerry/object_literal.js
+++ b/tests/jerry/N.object_literal.js
@@ -16,7 +16,9 @@ var person = {
     firstName:"John",
     lastName:"Doe",
     age:50,
-    eyeColor:"blue"
+    eyeColor:"blue",
+    "gender":"male",
+    0:0
 };
 
 assert (person.firstName === "John");
@@ -27,6 +29,9 @@ assert (person.age === 50);
 assert (person["age"] === 50);
 assert (person.eyeColor === "blue");
 assert (person["eyeColor"] === "blue");
+assert (person.gender === "male");
+assert (person["gender"] === "male");
+assert (person["0"] === 0);
 
 var x = person;
 x.age = 40;