diff --git a/cansequence.c b/cansequence.c
index 3510a91..40839c8 100644
--- a/cansequence.c
+++ b/cansequence.c
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <limits.h>
 
 #include <net/if.h>