diff -r e95106e347f6 src/if_perl.xs
--- a/src/if_perl.xs	Wed Jul 21 22:27:37 2010 +0200
+++ b/src/if_perl.xs	Wed Jul 21 17:39:49 2010 -0400
@@ -89,7 +89,7 @@
 #if defined(DYNAMIC_PERL) || defined(PROTO)
 
 #ifndef DYNAMIC_PERL /* just generating prototypes */
-#ifdef _MSWIN
+#ifdef _WIN32
 typedef int HANDLE;
 #endif
 typedef int XSINIT_t;
@@ -97,7 +97,7 @@
 typedef int perl_key;
 #endif
 
-#ifndef _MSWIN
+#ifndef _WIN32
 #include <dlfcn.h>
 #define HANDLE void*
 #define PERL_PROC void*