diff --git a/src/main.cpp b/src/main.cpp
index 45d2e7a39..049a732d5 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -6360,7 +6360,7 @@ bool LoadExternalBlockFile(FILE* fileIn, CDiskBlockPos *dbp)
     try {
         // This takes over fileIn and calls fclose() on it in the CBufferedFile destructor
         //CBufferedFile blkdat(fileIn, 2*MAX_BLOCK_SIZE, MAX_BLOCK_SIZE+8, SER_DISK, CLIENT_VERSION);
-        CBufferedFile blkdat(fileIn, 32*MAX_BLOCK_SIZE(10000000), MAX_BLOCK_SIZE(10000000)+8, SER_DISK, CLIENT_VERSION);
+        CBufferedFile blkdat(fileIn, 2*MAX_BLOCK_SIZE(10000000), MAX_BLOCK_SIZE(10000000)+8, SER_DISK, CLIENT_VERSION);
         uint64_t nRewind = blkdat.GetPos();
         while (!blkdat.eof()) {
             boost::this_thread::interruption_point();
@@ -6387,15 +6387,15 @@ bool LoadExternalBlockFile(FILE* fileIn, CDiskBlockPos *dbp)
             }
             try {
                 // read block
+                CBlock block;
                 uint64_t nBlockPos = blkdat.GetPos();
                 if (dbp)
                     dbp->nPos = nBlockPos;
                 blkdat.SetLimit(nBlockPos + nSize);
                 blkdat.SetPos(nBlockPos);
-                CBlock block;
                 blkdat >> block;
+                
                 nRewind = blkdat.GetPos();
-
                 // detect out of order blocks, and store them for later
                 uint256 hash = block.GetHash();
                 if (hash != chainparams.GetConsensus().hashGenesisBlock && mapBlockIndex.find(block.hashPrevBlock) == mapBlockIndex.end()) {
@@ -6426,6 +6426,7 @@ bool LoadExternalBlockFile(FILE* fileIn, CDiskBlockPos *dbp)
                     std::pair<std::multimap<uint256, CDiskBlockPos>::iterator, std::multimap<uint256, CDiskBlockPos>::iterator> range = mapBlocksUnknownParent.equal_range(head);
                     while (range.first != range.second) {
                         std::multimap<uint256, CDiskBlockPos>::iterator it = range.first;
+                        
                         if (ReadBlockFromDisk(mapBlockIndex.count(hash)!=0?mapBlockIndex[hash]->GetHeight():0,block, it->second,1))
                         {
                             LogPrintf("%s: Processing out of order child %s of %s\n", __func__, block.GetHash().ToString(),