diff --git a/tests/Request.html b/tests/Request.html
index 1222dcbf3f..c2831e59cd 100644
--- a/tests/Request.html
+++ b/tests/Request.html
@@ -15,7 +15,6 @@
     }
     function teardown() {
         OpenLayers.Request.XMLHttpRequest = window._xhr;
-        delete window._xhr;
     }
     
     function test_issue(t) {