diff --git a/src/chainparamsbase.cpp b/src/chainparamsbase.cpp
index 80a00654df..9353f7772e 100644
--- a/src/chainparamsbase.cpp
+++ b/src/chainparamsbase.cpp
@@ -144,8 +144,3 @@ std::string GetDevNetName()
     std::string devNetName = GetArg("-devnet", "");
     return "devnet" + (devNetName.empty() ? "" : "-" + devNetName);
 }
-
-bool AreBaseParamsConfigured()
-{
-    return pCurrentBaseParams != NULL;
-}
diff --git a/src/chainparamsbase.h b/src/chainparamsbase.h
index 412f3551aa..780a35a255 100644
--- a/src/chainparamsbase.h
+++ b/src/chainparamsbase.h
@@ -56,10 +56,4 @@ std::string ChainNameFromCommandLine();
 
 std::string GetDevNetName();
 
-/**
- * Return true if SelectBaseParamsFromCommandLine() has been called to select
- * a network.
- */
-bool AreBaseParamsConfigured();
-
 #endif // BITCOIN_CHAINPARAMSBASE_H
diff --git a/src/key.cpp b/src/key.cpp
index b3ea98fb92..5f4cda26da 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -131,14 +131,6 @@ void CKey::MakeNewKey(bool fCompressedIn) {
     fCompressed = fCompressedIn;
 }
 
-bool CKey::SetPrivKey(const CPrivKey &privkey, bool fCompressedIn) {
-    if (!ec_privkey_import_der(secp256k1_context_sign, (unsigned char*)begin(), &privkey[0], privkey.size()))
-        return false;
-    fCompressed = fCompressedIn;
-    fValid = true;
-    return true;
-}
-
 CPrivKey CKey::GetPrivKey() const {
     assert(fValid);
     CPrivKey privkey;
diff --git a/src/key.h b/src/key.h
index b218f2cb72..cf9f99aafb 100644
--- a/src/key.h
+++ b/src/key.h
@@ -94,9 +94,6 @@ public:
     //! Check whether the public key corresponding to this private key is (to be) compressed.
     bool IsCompressed() const { return fCompressed; }
 
-    //! Initialize from a CPrivKey (serialized OpenSSL private key data).
-    bool SetPrivKey(const CPrivKey& vchPrivKey, bool fCompressed);
-
     //! Generate a new private key using a cryptographic PRNG.
     void MakeNewKey(bool fCompressed);
 
diff --git a/src/netaddress.cpp b/src/netaddress.cpp
index c974298921..c9456ff582 100644
--- a/src/netaddress.cpp
+++ b/src/netaddress.cpp
@@ -182,12 +182,6 @@ bool CNetAddr::IsLocal() const
    return false;
 }
 
-bool CNetAddr::IsMulticast() const
-{
-    return    (IsIPv4() && (GetByte(3) & 0xF0) == 0xE0)
-           || (GetByte(15) == 0xFF);
-}
-
 bool CNetAddr::IsValid() const
 {
     // Cleanup 3-byte shifted addresses caused by garbage in size field
diff --git a/src/netaddress.h b/src/netaddress.h
index 85b7b94b3e..0c6166d769 100644
--- a/src/netaddress.h
+++ b/src/netaddress.h
@@ -67,7 +67,6 @@ class CNetAddr
         bool IsLocal() const;
         bool IsRoutable() const;
         bool IsValid() const;
-        bool IsMulticast() const;
         enum Network GetNetwork() const;
         std::string ToString() const;
         std::string ToStringIP(bool fUseGetnameinfo = true) const;
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index bc7e58acdd..6633336fdd 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -231,10 +231,10 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript&
 {
     static const CScriptNum bnZero(0);
     static const CScriptNum bnOne(1);
-    static const CScriptNum bnFalse(0);
-    static const CScriptNum bnTrue(1);
+    // static const CScriptNum bnFalse(0);
+    // static const CScriptNum bnTrue(1);
     static const valtype vchFalse(0);
-    static const valtype vchZero(0);
+    // static const valtype vchZero(0);
     static const valtype vchTrue(1, 1);
 
     CScript::const_iterator pc = script.begin();
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
index 98d6df3dc4..fea26f3484 100644
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -465,15 +465,6 @@ void CDBEnv::CloseDb(const std::string& strFile)
     }
 }
 
-bool CDBEnv::RemoveDb(const std::string& strFile)
-{
-    this->CloseDb(strFile);
-
-    LOCK(cs_db);
-    int rc = dbenv->dbremove(NULL, strFile.c_str(), NULL, DB_AUTO_COMMIT);
-    return (rc == 0);
-}
-
 bool CDB::Rewrite(CWalletDBWrapper& dbw, const char* pszSkip)
 {
     if (dbw.IsDummy()) {
diff --git a/src/wallet/db.h b/src/wallet/db.h
index c1fac5cada..e4d8a5154d 100644
--- a/src/wallet/db.h
+++ b/src/wallet/db.h
@@ -72,7 +72,6 @@ public:
     void CheckpointLSN(const std::string& strFile);
 
     void CloseDb(const std::string& strFile);
-    bool RemoveDb(const std::string& strFile);
 
     DbTxn* TxnBegin(int flags = DB_TXN_WRITE_NOSYNC)
     {