diff --git a/slcan_attach.c b/slcan_attach.c
index ab8ff0a..485cbe3 100644
--- a/slcan_attach.c
+++ b/slcan_attach.c
@@ -52,6 +52,7 @@
 #include <net/if.h>
 #include <termios.h>
 #include <linux/tty.h>
+#include <linux/sockios.h>
 
 void print_usage(char *prg)
 {
diff --git a/slcand.c b/slcand.c
index e5e4752..e8c70e0 100644
--- a/slcand.c
+++ b/slcand.c
@@ -38,6 +38,7 @@
 #include <net/if.h>
 #include <termios.h>
 #include <linux/tty.h>
+#include <linux/sockios.h>
 
 /* Change this to whatever your daemon is called */
 #define DAEMON_NAME "slcand"