diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 45937ee21..ad606b853 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -77,7 +77,7 @@ class CScheduler;
 class CTxMemPool;
 class CBlockPolicyEstimator;
 class CWalletTx;
-class FeeCalculation;
+struct FeeCalculation;
 
 /** (client) version numbers for particular wallet features */
 enum WalletFeature