diff --git a/src/main.cpp b/src/main.cpp
index 32393e5e0..a3e36ff87 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -17,6 +17,7 @@
 #include "txmempool.h"
 #include "ui_interface.h"
 #include "util.h"
+#include "utilmoneystr.h"
 
 #include <sstream>
 
@@ -1316,7 +1317,7 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach
 bool CScriptCheck::operator()() const {
     const CScript &scriptSig = ptxTo->vin[nIn].scriptSig;
     if (!VerifyScript(scriptSig, scriptPubKey, *ptxTo, nIn, nFlags))
-        return error("CScriptCheck() : %s VerifySignature failed", ptxTo->GetHash().ToString());
+        return error("CScriptCheck() : %s:%d VerifySignature failed", ptxTo->GetHash().ToString(), nIn);
     return true;
 }
 
@@ -1361,7 +1362,8 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
         }
 
         if (nValueIn < tx.GetValueOut())
-            return state.DoS(100, error("CheckInputs() : %s value in < value out", tx.GetHash().ToString()),
+            return state.DoS(100, error("CheckInputs() : %s value in (%s) < value out (%s)",
+                                        tx.GetHash().ToString(), FormatMoney(nValueIn), FormatMoney(tx.GetValueOut())),
                              REJECT_INVALID, "bad-txns-in-belowout");
 
         // Tally transaction fees