diff -ur freeglut-2.6.0/include/GL/freeglut_std.h freeglut-2.6.0.headers/include/GL/freeglut_std.h
--- freeglut-2.6.0/include/GL/freeglut_std.h	2009-04-21 04:52:10.000000000 +0100
+++ freeglut-2.6.0.headers/include/GL/freeglut_std.h	2009-10-14 08:59:26.767291372 +0100
@@ -58,7 +58,7 @@
 #    define WIN32_LEAN_AND_MEAN 1
 #  endif
 #   define NOMINMAX
-#   include <Windows.h>
+#   include <windows.h>
 
 /* Windows static library */
 #   ifdef FREEGLUT_STATIC
diff -ur freeglut-2.6.0/src/freeglut_internal.h freeglut-2.6.0.headers/src/freeglut_internal.h
--- freeglut-2.6.0/src/freeglut_internal.h	2009-04-21 04:52:09.000000000 +0100
+++ freeglut-2.6.0.headers/src/freeglut_internal.h	2009-10-14 09:00:11.450404138 +0100
@@ -90,9 +90,9 @@
  * because the cross-platform includes are case sensitive.
  */
 #if TARGET_HOST_MS_WINDOWS && !defined(_WIN32_WCE)
-#    include <Windows.h>
-#    include <WindowsX.h>
-#    include <MMSystem.h>
+#    include <windows.h>
+#    include <windowsx.h>
+#    include <mmsystem.h>
 /* CYGWIN does not have tchar.h, but has TEXT(x), defined in winnt.h. */
 #    ifndef __CYGWIN__
 #      include <tchar.h>