diff --git a/iguana/iguana_bundles.c b/iguana/iguana_bundles.c
index f69d7a776..7e1526cf3 100755
--- a/iguana/iguana_bundles.c
+++ b/iguana/iguana_bundles.c
@@ -390,12 +390,15 @@ struct iguana_txid *iguana_bundletx(struct iguana_info *coin,struct iguana_bundl
 {
     static const bits256 zero;
     int32_t hdrsi,iter; struct iguana_txid *T; int64_t Toffset; char fname[1024]; FILE *fp; struct iguana_ramchaindata rdata,*rptr;
-    if ( (rptr= bp->ramchain.H.data) != 0 )//|| (bp == coin->current && (rptr= coin->RTramchain.H.data) != 0) )
+    portable_mutex_lock(&coin->special_mutex);
+    if ( (rptr= bp->ramchain.H.data) != 0 || (bp == coin->current && (rptr= coin->RTramchain.H.data) != 0) )
     {
         T = RAMCHAIN_PTR(rptr,Toffset);
         *tx = T[txidind];
+        portable_mutex_unlock(&coin->special_mutex);
         return(tx);
     }
+    portable_mutex_unlock(&coin->special_mutex);
     printf("bundletx without ramchain\n");
     for (iter=0; iter<2; iter++)
     {
diff --git a/iguana/iguana_init.c b/iguana/iguana_init.c
index b10e0d4a2..9c3614a81 100755
--- a/iguana/iguana_init.c
+++ b/iguana/iguana_init.c
@@ -73,6 +73,7 @@ void iguana_initcoin(struct iguana_info *coin,cJSON *argjson)
             usleep(1);
         coin->startutc++;
         printf("start.%u\n",coin->startutc);
+        portable_mutex_init(&coin->special_mutex);
         coin->startmillis = OS_milliseconds(), coin->starttime = tai_now();
         coin->avetime = 1 * 100;
         //coin->R.maxrecvbundles = IGUANA_INITIALBUNDLES;
diff --git a/iguana/iguana_volatiles.c b/iguana/iguana_volatiles.c
index bba065623..d6abe281e 100755
--- a/iguana/iguana_volatiles.c
+++ b/iguana/iguana_volatiles.c
@@ -209,7 +209,6 @@ int32_t iguana_volatileupdate(struct iguana_info *coin,int32_t incremental,struc
             }
         }
         printf("iguana_volatileupdate.%d: [%d] spent.(u%u %.8f pkind.%d) double spend? at ht.%d [%d] spendind.%d (%p %p)\n",incremental,spent_hdrsi,spent_unspentind,dstr(spent_value),spent_pkind,fromheight,fromheight/coin->chain->bundlesize,spendind,spentchain->Uextras,spentchain->A2);
-        coin->RTdatabad = 1;
         /*if ( coin->current != 0 && fromheight >= coin->current->bundleheight )
             coin->RTdatabad = 1;
         else
@@ -220,12 +219,23 @@ int32_t iguana_volatileupdate(struct iguana_info *coin,int32_t incremental,struc
         coin->spendvectorsaved = 0;
         coin->started = 0;
         coin->active = 0;*/
+        coin->RTdatabad = 1;
         if ( coin->current != 0 && spent_hdrsi != coin->current->hdrsi && spent_hdrsi != fromheight/coin->chain->bundlesize )
         {
             printf("restart iguana\n");
-            iguana_bundleremove(coin,spent_hdrsi,0);
-            iguana_bundleremove(coin,fromheight/coin->chain->bundlesize,0);
-            //sleep(3);
+            struct iguana_bundle *bp;
+            portable_mutex_lock(&coin->special_mutex);
+            if ( (bp= coin->bundles[spent_hdrsi]) != 0 )
+            {
+                iguana_bundleremove(coin,spent_hdrsi,0);
+                bp->ramchain.H.data = 0;
+            }
+            if ( (bp= coin->bundles[fromheight/coin->chain->bundlesize]) != 0 )
+            {
+                iguana_bundleremove(coin,fromheight/coin->chain->bundlesize,0);
+                bp->ramchain.H.data = 0;
+            }
+            portable_mutex_unlock(&coin->special_mutex);
             exit(-1);
         }
     }
diff --git a/includes/iguana_structs.h b/includes/iguana_structs.h
index 20c7ce0c9..987a4b64c 100755
--- a/includes/iguana_structs.h
+++ b/includes/iguana_structs.h
@@ -401,7 +401,7 @@ struct iguana_info
     struct OS_memspace TXMEM,MEM,MEMB[IGUANA_MAXBUNDLESIZE];
     queue_t acceptQ,hdrsQ,blocksQ,priorityQ,possibleQ,cacheQ,recvQ,msgrequestQ;
     double parsemillis,avetime; uint32_t Launched[8],Terminated[8];
-    portable_mutex_t peers_mutex,blocks_mutex;
+    portable_mutex_t peers_mutex,blocks_mutex,special_mutex;
     char changeaddr[64];
     struct iguana_bundle *bundles[IGUANA_MAXBUNDLES],*current,*lastpending;
     struct iguana_ramchain RTramchain; struct OS_memspace RTmem,RThashmem; bits256 RThash1;