diff --git a/expat/xmltok/dllmain.c b/expat/xmltok/dllmain.c
index 579d6567..f508a452 100755
--- a/expat/xmltok/dllmain.c
+++ b/expat/xmltok/dllmain.c
@@ -18,6 +18,9 @@ James Clark. All Rights Reserved.
 Contributor(s):
 */
 
+#define STRICT 1
+#define WIN32_LEAN_AND_MEAN 1
+
 #include <windows.h>
 
 BOOL WINAPI DllMain(HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
diff --git a/expat/xmlwf/codepage.c b/expat/xmlwf/codepage.c
index 159a12a0..b8d89e9c 100755
--- a/expat/xmlwf/codepage.c
+++ b/expat/xmlwf/codepage.c
@@ -21,6 +21,9 @@ Contributor(s):
 #include "codepage.h"
 
 #ifdef WIN32
+#define STRICT 1
+#define WIN32_LEAN_AND_MEAN 1
+
 #include <windows.h>
 
 int codepageMap(int cp, int *map)
diff --git a/expat/xmlwf/win32filemap.c b/expat/xmlwf/win32filemap.c
index aa6d4c26..587fe28c 100755
--- a/expat/xmlwf/win32filemap.c
+++ b/expat/xmlwf/win32filemap.c
@@ -19,6 +19,7 @@ Contributor(s):
 */
 
 #define STRICT 1
+#define WIN32_LEAN_AND_MEAN 1
 
 #ifdef XML_UNICODE_WCHAR_T
 #ifndef XML_UNICODE