diff --git a/mozilla/expat/xmlparse/xmlparse.h b/mozilla/expat/xmlparse/xmlparse.h
index f5dfdbec5ad..c5885122927 100644
--- a/mozilla/expat/xmlparse/xmlparse.h
+++ b/mozilla/expat/xmlparse/xmlparse.h
@@ -411,12 +411,6 @@ The new parser is completely independent and may safely be used in a separate th
 The handlers and userData are initialized from the parser argument.
 Returns 0 if out of memory.  Otherwise returns a new XML_Parser object. */
 
-#if 1
-#ifndef XML_DTD
-#define XML_DTD
-#endif
-#endif /* 0 */
-
 XML_Parser XMLPARSEAPI
 XML_ExternalEntityParserCreate(XML_Parser parser,
 			       const XML_Char *context,
diff --git a/mozilla/parser/expat/lib/xmlparse.h b/mozilla/parser/expat/lib/xmlparse.h
index f5dfdbec5ad..c5885122927 100644
--- a/mozilla/parser/expat/lib/xmlparse.h
+++ b/mozilla/parser/expat/lib/xmlparse.h
@@ -411,12 +411,6 @@ The new parser is completely independent and may safely be used in a separate th
 The handlers and userData are initialized from the parser argument.
 Returns 0 if out of memory.  Otherwise returns a new XML_Parser object. */
 
-#if 1
-#ifndef XML_DTD
-#define XML_DTD
-#endif
-#endif /* 0 */
-
 XML_Parser XMLPARSEAPI
 XML_ExternalEntityParserCreate(XML_Parser parser,
 			       const XML_Char *context,