diff --git a/zebra/redistribute.h b/zebra/redistribute.h
index a523711bb0..ac257d6389 100644
--- a/zebra/redistribute.h
+++ b/zebra/redistribute.h
@@ -55,20 +55,20 @@ void redistribute_delete(const struct route_node *rn,
 			 const struct route_entry *old_re,
 			 const struct route_entry *new_re);
 
-extern void zebra_interface_up_update(struct interface *);
-extern void zebra_interface_down_update(struct interface *);
+extern void zebra_interface_up_update(struct interface *ifp);
+extern void zebra_interface_down_update(struct interface *ifp);
 
-extern void zebra_interface_add_update(struct interface *);
-extern void zebra_interface_delete_update(struct interface *);
+extern void zebra_interface_add_update(struct interface *ifp);
+extern void zebra_interface_delete_update(struct interface *ifp);
 
-extern void zebra_interface_address_add_update(struct interface *,
-					       struct connected *);
-extern void zebra_interface_address_delete_update(struct interface *,
+extern void zebra_interface_address_add_update(struct interface *ifp,
+					       struct connected *c);
+extern void zebra_interface_address_delete_update(struct interface *ifp,
 						  struct connected *c);
-extern void zebra_interface_parameters_update(struct interface *);
-extern void zebra_interface_vrf_update_del(struct interface *,
+extern void zebra_interface_parameters_update(struct interface *ifp);
+extern void zebra_interface_vrf_update_del(struct interface *ifp,
 					   vrf_id_t new_vrf_id);
-extern void zebra_interface_vrf_update_add(struct interface *,
+extern void zebra_interface_vrf_update_add(struct interface *ifp,
 					   vrf_id_t old_vrf_id);
 
 extern int zebra_import_table(afi_t afi, vrf_id_t vrf_id,