diff --git a/src/komodo_nSPV_fullnode.h b/src/komodo_nSPV_fullnode.h
index b496a6fb1..298a96ff8 100644
--- a/src/komodo_nSPV_fullnode.h
+++ b/src/komodo_nSPV_fullnode.h
@@ -338,7 +338,9 @@ void komodo_nSPVreq(CNode *pfrom,std::vector<uint8_t> request) // received a req
             if ( timestamp > pfrom->prevtimes[ind] )
             {
                 struct NSPV_inforesp I;
-                iguana_rwnum(0,&request[1],sizeof(reqheight),&reqheight);
+                if ( len == 1+sizeof(reqheight) )
+                    iguana_rwnum(0,&request[1],sizeof(reqheight),&reqheight);
+                else reqheight = 0;
                 //fprintf(stderr,"request height.%d\n",reqheight);
                 memset(&I,0,sizeof(I));
                 if ( (slen= NSPV_getinfo(&I,reqheight)) > 0 )