@@ -, +, @@ 
---
 filter.h |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
--- a/filter.h	
+++ a/filter.h	
@@ -47,9 +47,12 @@ 
 
 //---------------------- Types ---------------------------------------------
 
-#define UCHAR	unsigned char
-#define USHORT  unsigned short
-#define ULONG   unsigned long
+#undef UCHAR
+#undef USHORT
+#undef ULONG
+typedef unsigned char           UCHAR;
+typedef unsigned short          USHORT;
+typedef unsigned long           ULONG;
 
 enum{
 	_UCHAR,
--