diff --git a/src/main.cpp b/src/main.cpp
index 1afb622a6..456ed9b22 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4012,7 +4012,7 @@ bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state, CBloc
         BlockMap::iterator mi = mapBlockIndex.find(block.hashPrevBlock);
         if (mi == mapBlockIndex.end())
         {
-            fprintf(stderr,"AcceptBlockHeader hashPrevBlock %s not found req %s\n",block.hashPrevBlock.ToString().c_str(),komodo_requestedhash.ToString().c_cstr());
+            fprintf(stderr,"AcceptBlockHeader hashPrevBlock %s not found req %s\n",block.hashPrevBlock.ToString().c_str(),komodo_requestedhash.ToString().c_str());
             if ( komodo_requestedhash == zero )
                 komodo_requestedhash = block.hashPrevBlock;
             // request block.hashPrevBlock
@@ -6700,7 +6700,7 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
                 }
             }
         }
-        if ( komodo_requestedhash != zero )
+        if ( komodo_requestedhash != zero && (pindex= mapBlockIndex[komodo_requestedhash]) != 0 )
         {
             fprintf(stderr,"request %s to nodeid.%d\n",komodo_requestedhash.ToString().c_str(),pto->GetId());
             vGetData.push_back(CInv(MSG_BLOCK, komodo_requestedhash));