diff --git a/Zend/tests/double_to_string.phpt b/Zend/tests/double_to_string.phpt
index e6c66e2530f..d5793b192a6 100644
--- a/Zend/tests/double_to_string.phpt
+++ b/Zend/tests/double_to_string.phpt
@@ -1,5 +1,7 @@
 --TEST--
 double to string conversion tests
+--SKIPIF--
+<?php if (PHP_INT_SIZE != 4) die("skip this test is for 32bit platform only"); ?>
 --FILE--
 <?php