diff --git a/src/wallet/fees.h b/src/wallet/fees.h
index 67af523c7..6419d0a7e 100644
--- a/src/wallet/fees.h
+++ b/src/wallet/fees.h
@@ -1,27 +1,26 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2017 The Bitcoin Core developers
 // Copyright (c) 2018 The Bitcoin developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #ifndef BITCOIN_WALLET_FEES_H
 #define BITCOIN_WALLET_FEES_H
 
 #include "amount.h"
 
 class CTxMemPool;
-struct FeeCalculation;
 
 /**
  * Estimate the minimum fee considering user set parameters
  * and the required fee
  */
 Amount GetMinimumFee(unsigned int nTxBytes, const CTxMemPool &pool);
 
 /**
  * Estimate the minimum fee considering required fee and targetFee
  */
 Amount GetMinimumFee(unsigned int nTxBytes, const CTxMemPool &pool,
                      Amount targetFee);
 
 #endif // BITCOIN_WALLET_FEES_H