1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/ndpi_win32.h b/src/include/ndpi_win32.h
index 876e59c05..175ecd57d 100644
--- a/src/include/ndpi_win32.h
+++ b/src/include/ndpi_win32.h
@@ -38,6 +38,8 @@
 
 #define _WS2TCPIP_H_ /* Avoid compilation problems */
 
+#define	IPVERSION	4 /* on *nix it is defined in netinet/ip.h */ 
+
 extern char* strsep(char **sp, const char *sep);
 
 typedef unsigned char  u_char;