diff --git a/ext/wddx/tests/wddx.xml b/ext/wddx/tests/wddx.xml
index 46ad58d6641..00857095c98 100644
--- a/ext/wddx/tests/wddx.xml
+++ b/ext/wddx/tests/wddx.xml
@@ -20,7 +20,7 @@
                          <dateTime>1980-06-12T04:32:12+00</dateTime>
                      </var>
                      <var name='aDateTime3'>
-                         <dateTime>2040-06-12T04:32:12</dateTime>
+                         <dateTime>2040-06-12T04:32:12+00</dateTime>
                      </var>
                      <var name='aBoolean'>
                          <boolean value='true'/>