diff --git a/src/main.cpp b/src/main.cpp
index 9ed9d0e0b..e4e4bc62b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -812,8 +812,8 @@ std::string FormatStateMessage(const CValidationState &state)
         state.GetRejectCode());
 }
 
-bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const CTransaction &tx, bool fLimitFree,
-                              bool* pfMissingInputs, bool fOverrideMempoolLimit, CAmount nAbsurdFee,
+bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const CTransaction& tx, bool fLimitFree,
+                              bool* pfMissingInputs, bool fOverrideMempoolLimit, const CAmount nAbsurdFee,
                               std::vector<uint256>& vHashTxnToUncache)
 {
     const uint256 hash = tx.GetHash();
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 5072042b8..c02323d6e 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -205,7 +205,7 @@ public:
     bool IsInMainChain() const { const CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet) > 0; }
     int GetBlocksToMaturity() const;
     /** Pass this transaction to the mempool. Fails if absolute fee exceeds absurd fee. */
-    bool AcceptToMemoryPool(bool fLimitFree, CAmount nAbsurdFee);
+    bool AcceptToMemoryPool(bool fLimitFree, const CAmount nAbsurdFee);
     bool hashUnset() const { return (hashBlock.IsNull() || hashBlock == ABANDON_HASH); }
     bool isAbandoned() const { return (hashBlock == ABANDON_HASH); }
     void setAbandoned() { hashBlock = ABANDON_HASH; }