diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 0ca9a077d..0f2ab284e 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1217,7 +1217,7 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
             {
                 if (ExtractDestination(txin.vout[tx.vin[0].prevout.n].scriptPubKey, address)) {
                     if (mapAddressBook.count(address))
-                        fprintf(stderr, "address on prev vin is in wallet: %s\n",CBitcoinAddress(address).ToString());
+                        fprintf(stderr, "address on prev vin is in wallet: %s\n",CBitcoinAddress(address).ToString().c_str());
                  }
             }