diff --git a/src/wallet/crypter.cpp b/src/wallet/crypter.cpp
index dcce88cedc7e1..3b35003807323 100644
--- a/src/wallet/crypter.cpp
+++ b/src/wallet/crypter.cpp
@@ -153,6 +153,18 @@ bool CCryptoKeyStore::SetCrypted()
     return true;
 }
 
+bool CCryptoKeyStore::IsLocked() const
+{
+    if (!IsCrypted())
+        return false;
+    bool result;
+    {
+        LOCK(cs_KeyStore);
+        result = vMasterKey.empty();
+    }
+    return result;
+}
+
 bool CCryptoKeyStore::Lock()
 {
     if (!SetCrypted())
@@ -239,6 +251,18 @@ bool CCryptoKeyStore::AddCryptedKey(const CPubKey &vchPubKey, const std::vector<
     return true;
 }
 
+bool CCryptoKeyStore::HaveKey(const CKeyID &address) const
+{
+    {
+        LOCK(cs_KeyStore);
+        if (!IsCrypted()) {
+            return CBasicKeyStore::HaveKey(address);
+        }
+        return mapCryptedKeys.count(address) > 0;
+    }
+    return false;
+}
+
 bool CCryptoKeyStore::GetKey(const CKeyID &address, CKey& keyOut) const
 {
     {
@@ -275,6 +299,19 @@ bool CCryptoKeyStore::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) co
     }
 }
 
+std::set<CKeyID> CCryptoKeyStore::GetKeys() const
+{
+    LOCK(cs_KeyStore);
+    if (!IsCrypted()) {
+        return CBasicKeyStore::GetKeys();
+    }
+    std::set<CKeyID> set_address;
+    for (const auto& mi : mapCryptedKeys) {
+        set_address.insert(mi.first);
+    }
+    return set_address;
+}
+
 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 {
     {
diff --git a/src/wallet/crypter.h b/src/wallet/crypter.h
index eac258b287ecf..89a8f285d95d2 100644
--- a/src/wallet/crypter.h
+++ b/src/wallet/crypter.h
@@ -137,52 +137,16 @@ class CCryptoKeyStore : public CBasicKeyStore
     {
     }
 
-    bool IsCrypted() const
-    {
-        return fUseCrypto;
-    }
-
-    bool IsLocked() const
-    {
-        if (!IsCrypted())
-            return false;
-        bool result;
-        {
-            LOCK(cs_KeyStore);
-            result = vMasterKey.empty();
-        }
-        return result;
-    }
-
+    bool IsCrypted() const { return fUseCrypto; }
+    bool IsLocked() const;
     bool Lock();
 
     virtual bool AddCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
     bool AddKeyPubKey(const CKey& key, const CPubKey &pubkey) override;
-    bool HaveKey(const CKeyID &address) const override
-    {
-        {
-            LOCK(cs_KeyStore);
-            if (!IsCrypted()) {
-                return CBasicKeyStore::HaveKey(address);
-            }
-            return mapCryptedKeys.count(address) > 0;
-        }
-        return false;
-    }
+    bool HaveKey(const CKeyID &address) const override;
     bool GetKey(const CKeyID &address, CKey& keyOut) const override;
     bool GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const override;
-    std::set<CKeyID> GetKeys() const override
-    {
-        LOCK(cs_KeyStore);
-        if (!IsCrypted()) {
-            return CBasicKeyStore::GetKeys();
-        }
-        std::set<CKeyID> set_address;
-        for (const auto& mi : mapCryptedKeys) {
-            set_address.insert(mi.first);
-        }
-        return set_address;
-    }
+    std::set<CKeyID> GetKeys() const override;
 
     /**
      * Wallet status (encrypted, locked) changed.