diff --git a/demo/searpc-demo-packet.h b/demo/searpc-demo-packet.h
index 4f755cd..926f36b 100644
--- a/demo/searpc-demo-packet.h
+++ b/demo/searpc-demo-packet.h
@@ -13,6 +13,8 @@
     #include <ctype.h>
     #include <ws2tcpip.h>
     #define UNUSED 
+#else
+    #include <arpa/inet.h>
 #endif
 
 typedef struct packet {