1 files changed, 2 insertions, 1 deletions
diff --git a/iface.h b/iface.h
index cdcf716..47321d5 100644
--- a/iface.h
+++ b/iface.h
@@ -26,7 +26,8 @@ enum iface_event_type {
 	IFACE_DEL,
 };
 
-typedef void (*iface_event_handler_t)(enum iface_event_type, int af, unsigned int ifindex);
+typedef void (*iface_event_handler_t)(enum iface_event_type, unsigned char af,
+				      unsigned int ifindex);
 
 void iface_register_event_handler(iface_event_handler_t event_handler);
 int iface_start_thread(void);