diff --git a/src/main.cpp b/src/main.cpp
index c88f1520a..2aad3b9bb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2870,7 +2870,7 @@ namespace {
         hasher << hashBlock;
         hasher << blockundo;
         if (hashChecksum != hasher.GetHash())
-            return error("%s: Checksum mismatch", __func__);
+            return error("%s: Checksum mismatch %s vs %s", __func__,hashChecksum.GetHex().c_str(),hasher.GetHash().GetHex().c_str());
 
         return true;
     }
diff --git a/src/utilstrencodings.cpp b/src/utilstrencodings.cpp
index df788b2ab..d4bba72ee 100644
--- a/src/utilstrencodings.cpp
+++ b/src/utilstrencodings.cpp
@@ -435,7 +435,7 @@ bool ParseFixedPoint(const std::string &val, int decimals, int64_t *amount_out)
         if ( i == n ) // 90000000000
         {
             *amount_out = val64 * 100000000;
-            fprintf(stderr,"special case: %s -> %.8f\n",val.c_str(),(double)*amount_out/100000000);
+            //fprintf(stderr,"special case: %s -> %.8f\n",val.c_str(),(double)*amount_out/100000000);
             return(true);
         }
     }
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 5200677fd..6cf8eeed8 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -421,7 +421,7 @@ static void SendMoney(const CTxDestination &address, CAmount nValue, bool fSubtr
     // Check amount
     if (nValue <= 0)
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid amount");
-fprintf(stderr,"nValue %.8f vs curBalance %.8f\n",(double)nValue/COIN,(double)curBalance/COIN);
+//fprintf(stderr,"nValue %.8f vs curBalance %.8f\n",(double)nValue/COIN,(double)curBalance/COIN);
     if (nValue > curBalance)
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Insufficient funds");