diff --git a/ospfd/ospfd.h b/ospfd/ospfd.h
index 4242aa0..bf70d02 100644
--- a/ospfd/ospfd.h
+++ b/ospfd/ospfd.h
@@ -194,8 +194,9 @@
   struct route_table *external_lsas;    /* Database of external LSAs,
 					   prefix is LSA's adv. network*/
 
-  /* Time stamps. */
+  /* Time stamps */
   struct timeval ts_spf;		/* SPF calculation time stamp. */
+  struct timeval ts_spf_duration;	/* Execution time of last SPF */
 
   struct route_table *maxage_lsa;       /* List of MaxAge LSA for deletion. */
   int redistribute;                     /* Num of redistributed protocols. */
@@ -393,6 +394,9 @@
   /* Statistics field. */
   u_int32_t spf_calculation;	/* SPF Calculation Count. */
 
+  /* Time stamps. */
+  struct timeval ts_spf;		/* SPF calculation time stamp. */
+
   /* Router count. */
   u_int32_t abr_count;		/* ABR router in this area. */
   u_int32_t asbr_count;		/* ASBR router in this area. */