diff --git a/src/capture.c b/src/capture.c
index 278f534..748e992 100644
--- a/src/capture.c
+++ b/src/capture.c
@@ -5,6 +5,7 @@
 #include <fcntl.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
+#include <linux/sockios.h>
 #include <net/if.h>
 
 #include <hexagram/capture.h>