diff --git a/iguana/dPoW.h b/iguana/dPoW.h
index d649c8d0c..11a4fd1fa 100755
--- a/iguana/dPoW.h
+++ b/iguana/dPoW.h
@@ -141,7 +141,7 @@ struct dpow_info
     struct dpow_hashheight approved[DPOW_FIFOSIZE],notarized[DPOW_FIFOSIZE];
     bits256 activehash,lastnotarized,srctx[DPOW_MAXTX],desttx[DPOW_MAXTX];
     uint32_t SRCREALTIME,lastsrcupdate,destupdated,srcconfirms,numdesttx,numsrctx,lastsplit,cancelratify;
-    int32_t lastheight,maxblocks,SRCHEIGHT,SHORTFLAG,ratifying,minsigs,freq;
+    int32_t lastheight,maxblocks,SRCHEIGHT,DESTHEIGHT,prevDESTHEIGHT,SHORTFLAG,ratifying,minsigs,freq;
     struct pax_transaction *PAX;
     portable_mutex_t paxmutex,dexmutex;
     uint32_t ipbits[128],numipbits;
diff --git a/iguana/iguana_notary.c b/iguana/iguana_notary.c
index ee1278b4f..ac9846a8e 100755
--- a/iguana/iguana_notary.c
+++ b/iguana/iguana_notary.c
@@ -61,10 +61,18 @@ void dpow_checkpointset(struct supernet_info *myinfo,struct dpow_checkpoint *che
 void dpow_srcupdate(struct supernet_info *myinfo,struct dpow_info *dp,int32_t height,bits256 hash,uint32_t timestamp,uint32_t blocktime)
 {
     //struct komodo_ccdataMoMoM mdata; cJSON *blockjson; uint64_t signedmask; struct iguana_info *coin;
-    void **ptrs; char str[65]; struct dpow_checkpoint checkpoint; int32_t i,ht;  struct dpow_block *bp;
+    void **ptrs; char str[65]; struct dpow_checkpoint checkpoint; int32_t i,ht,suppress=0;  struct dpow_block *bp;
     dpow_checkpointset(myinfo,&dp->last,height,hash,timestamp,blocktime);
     checkpoint = dp->srcfifo[dp->srcconfirms];
     dpow_fifoupdate(myinfo,dp->srcfifo,dp->last);
+    if ( strcmp(dp->dest,"KMD") == 0 )
+    {
+        if ( dp->DESTHEIGHT < dp->prevDESTHEIGHT+DPOW_CHECKPOINTFREQ )
+        {
+            suppress = 1;
+            fprintf(stderr,"suppress %s -> KMD\n",dp->symbol);
+        }
+    }
     /*if ( strcmp(dp->dest,"KMD") == 0 )//|| strcmp(dp->dest,"CHAIN") == 0 )
     {
         //if ( dp->SRCREALTIME == 0 )
@@ -109,11 +117,12 @@ void dpow_srcupdate(struct supernet_info *myinfo,struct dpow_info *dp,int32_t he
     }*/
     if ( dp->freq <= 0 )
         dp->freq = 1;
-    if ( bits256_nonz(checkpoint.blockhash.hash) != 0 && (checkpoint.blockhash.height % dp->freq) == 0 )
+    if ( suppress == 0 && bits256_nonz(checkpoint.blockhash.hash) != 0 && (checkpoint.blockhash.height % dp->freq) == 0 )
     {
         if ( (0) && strcmp("KMD",dp->symbol) == 0 )
             printf("%s/%s src ht.%d dest.%u nonz.%d %s minsigs.%d freq.%d\n",dp->symbol,dp->dest,checkpoint.blockhash.height,dp->destupdated,bits256_nonz(checkpoint.blockhash.hash),bits256_str(str,dp->last.blockhash.hash),dp->minsigs,dp->freq);
         dpow_heightfind(myinfo,dp,checkpoint.blockhash.height + 1000);
+        dp->prevDESTHEIGHT = dp->DESTHEIGHT;
         ptrs = calloc(1,sizeof(void *)*5 + sizeof(struct dpow_checkpoint) + sizeof(pthread_t));
         ptrs[0] = (void *)myinfo;
         ptrs[1] = (void *)dp;
@@ -184,6 +193,7 @@ void dpow_destconfirm(struct supernet_info *myinfo,struct dpow_info *dp,struct d
 void dpow_destupdate(struct supernet_info *myinfo,struct dpow_info *dp,int32_t height,bits256 hash,uint32_t timestamp,uint32_t blocktime)
 {
     dp->destupdated = timestamp;
+    dp->DESTHEIGHT = height;
     dpow_checkpointset(myinfo,&dp->destchaintip,height,hash,timestamp,blocktime);
     dpow_approvedset(myinfo,dp,&dp->destchaintip,dp->desttx,dp->numdesttx);
     dpow_fifoupdate(myinfo,dp->destfifo,dp->destchaintip);