diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 1d44a791a..c3317da41 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -428,7 +428,7 @@ UniValue genminingCSV(const UniValue& params, bool fHelp)
                 str[32] = 0;
                 //hash = pindex->GetBlockHash();
                 memset(&hash,0,sizeof(hash));
-                if ( i > 64 && (pindex->nBits & 3) != 0 )
+                if ( i >= 64 && (pindex->nBits & 3) != 0 )
                     hash = ArithToUint256(zawy_ctB(bnTarget,solvetime));
                 for (z=0; z<16; z++)
                     sprintf(&str2[z<<1],"%02x",((uint8_t *)&hash)[31-z]);