diff --git a/ospf6d/ospf6_interface.h b/ospf6d/ospf6_interface.h
index 95a377f..220a475 100644
--- a/ospf6d/ospf6_interface.h
+++ b/ospf6d/ospf6_interface.h
@@ -166,6 +166,8 @@
 
 extern void ospf6_interface_init (void);
 
+extern void install_element_ospf6_clear_interface (void);
+
 extern int config_write_ospf6_debug_interface (struct vty *vty);
 extern void install_element_ospf6_debug_interface (void);