diff --git a/ospfd/ospf_interface.h b/ospfd/ospf_interface.h
index ed698c8..a437bfb 100644
--- a/ospfd/ospf_interface.h
+++ b/ospfd/ospf_interface.h
@@ -47,6 +47,7 @@
   DECLARE_IF_PARAM (u_int32_t, retransmit_interval); /* Retransmission Interval */
   DECLARE_IF_PARAM (u_char, passive_interface);      /* OSPF Interface is passive: no sending or receiving (no need to join multicast groups) */
   DECLARE_IF_PARAM (u_char, priority);               /* OSPF Interface priority */
+  DECLARE_IF_PARAM (struct in_addr, if_area);        /* Enable OSPF on this interface with area if_area */
   DECLARE_IF_PARAM (u_char, type);                   /* type of interface */
 #define OSPF_IF_ACTIVE                  0
 #define OSPF_IF_PASSIVE		        1