diff --git a/linkcheck/network/_network.c b/linkcheck/network/_network.c
index 03c23ba3..9fa18098 100644
--- a/linkcheck/network/_network.c
+++ b/linkcheck/network/_network.c
@@ -18,6 +18,8 @@
 #include "Python.h"
 #ifndef WIN32
 #include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/route.h>
 #include <net/if.h>  
 #endif