diff --git a/proto/ospf/lsalib.c b/proto/ospf/lsalib.c
index 3cd62a9e..6bf3577a 100644
--- a/proto/ospf/lsalib.c
+++ b/proto/ospf/lsalib.c
@@ -40,7 +40,6 @@ ospf_age(struct ospf_area *oa)
   struct proto_ospf *po=(struct proto_ospf *)p;
   struct top_hash_entry *en,*nxt;
   int flush=can_flush_lsa(oa);
-  bird_clock_t delta=now-oa->lage;
 
   WALK_SLIST_DELSAFE(en,nxt,oa->lsal)
   {
@@ -68,7 +67,7 @@ ospf_age(struct ospf_area *oa)
        flood_lsa(NULL,NULL,&en->lsa,po,NULL,oa,1);
        continue;
     }
-    if((en->lsa.age+=delta)>=LSA_MAXAGE)
+    if((en->lsa.age=(en->ini_age+(now-en->inst_t)))>=LSA_MAXAGE)
     {
       if(flush)
       {
@@ -78,7 +77,6 @@ ospf_age(struct ospf_area *oa)
       else en->lsa.age=LSA_MAXAGE;
     }
   }
-  oa->lage=now;
 }
 
 void
@@ -454,6 +452,7 @@ lsa_install_new(struct ospf_lsa_header *lsa, void *body, struct ospf_area *oa)
   if(en->lsa_body!=NULL) mb_free(en->lsa_body);
   en->lsa_body=body;
   memcpy(&en->lsa,lsa,sizeof(struct ospf_lsa_header));
+  en->ini_age=en->lsa.age;
 
   if(change)
   {
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index a7fb650e..11daba19 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -102,7 +102,6 @@ ospf_start(struct proto *p)
     oa->disp_timer->randomize=0;
     oa->disp_timer->hook=area_disp;
     oa->disp_timer->recurrent=oa->tick;
-    oa->lage=now;
     tm_start(oa->disp_timer,oa->tick);
     oa->calcrt=0;
     oa->origrt=0;
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 443eec0d..d22b617c 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -350,7 +350,6 @@ struct ospf_area {
   node n;
   u32 areaid;
   timer *disp_timer;		/* Area's dispatcher hear beat */
-  bird_clock_t lage;		/* Time of last aging */
   int calcrt;			/* Routing table calculation scheduled? */
   int origrt;			/* Rt lsa origination scheduled? */
   struct top_graph *gr;		/* LSA graph */
diff --git a/proto/ospf/topology.h b/proto/ospf/topology.h
index 3a475085..ca3096e4 100644
--- a/proto/ospf/topology.h
+++ b/proto/ospf/topology.h
@@ -19,11 +19,13 @@ struct top_hash_entry {  /* Index for fast mapping (type,rtrid,LSid)->vertex */
   ip_addr nh;				/* Next hop */
   struct iface *nhi;
   u16 dist;				/* Distance from the root */
+  u16 ini_age;
   u8 color;
 #define OUTSPF 0
 #define CANDIDATE 1
 #define INSPF 2
   u8 padding;
+  u16 padding2;
 };
 
 struct top_graph {