diff --git a/AppKit/Platform/DOM/CPPlatformString.j b/AppKit/Platform/DOM/CPPlatformString.j
index 5d06a9ee7..da3cc3a17 100644
--- a/AppKit/Platform/DOM/CPPlatformString.j
+++ b/AppKit/Platform/DOM/CPPlatformString.j
@@ -70,8 +70,7 @@ var DOMFixedWidthSpanElement    = nil,
     bodyElement.appendChild(DOMIFrameElement);
 
     DOMIFrameDocument = (DOMIFrameElement.contentDocument || DOMIFrameElement.contentWindow.document);
-    DOMIFrameDocument.write('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'+
-                            '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head></head><body></body></html>');
+    DOMIFrameDocument.write('<!DOCTYPE html><head></head><body></body></html>');
     DOMIFrameDocument.close();
 
     // IE needs this wide <div> to prevent unwanted text wrapping:
