diff --git a/src/tun.c b/src/tun.c
index 3823190..ae42066 100644
--- a/src/tun.c
+++ b/src/tun.c
@@ -14,7 +14,9 @@
 #include <net/if.h>
 
 #ifdef __linux__
-#include <linux/if_tun.h>
+#define IFF_TUN 0x0001
+#define IFF_NO_PI 0x1000
+#define TUNSETIFF _IOW('T', 202, int)
 #endif
 
 #ifdef __APPLE__