diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h
--- a/src/wallet/scriptpubkeyman.h
+++ b/src/wallet/scriptpubkeyman.h
@@ -202,6 +202,7 @@
     virtual int64_t GetOldestKeyPoolTime() { return GetTime(); }
 
     virtual size_t KeypoolCountExternalKeys() { return 0; }
+    virtual unsigned int GetKeyPoolSize() const { return 0; }
 
     virtual const CKeyMetadata *GetMetadata(uint160 id) const {
         return nullptr;
@@ -334,6 +335,7 @@
     int64_t GetOldestKeyPoolTime() override;
     size_t KeypoolCountExternalKeys() override
         EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    unsigned int GetKeyPoolSize() const override;
 
     const CKeyMetadata *GetMetadata(uint160 id) const override;
 
diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp
--- a/src/wallet/scriptpubkeyman.cpp
+++ b/src/wallet/scriptpubkeyman.cpp
@@ -419,6 +419,11 @@
     return setExternalKeyPool.size() + set_pre_split_keypool.size();
 }
 
+unsigned int LegacyScriptPubKeyMan::GetKeyPoolSize() const {
+    AssertLockHeld(cs_wallet);
+    return setInternalKeyPool.size() + setExternalKeyPool.size();
+}
+
 const CKeyMetadata *LegacyScriptPubKeyMan::GetMetadata(uint160 id) const {
     AssertLockHeld(cs_wallet);
     auto it = mapKeyMetadata.find(CKeyID(id));
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -1169,10 +1169,7 @@
 
     bool DelAddressBook(const CTxDestination &address);
 
-    unsigned int GetKeyPoolSize() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) {
-        AssertLockHeld(cs_wallet);
-        return setInternalKeyPool.size() + setExternalKeyPool.size();
-    }
+    unsigned int GetKeyPoolSize() const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
     //! signify that a particular wallet feature is now used. this may change
     //! nWalletVersion and nWalletMaxVersion if those are lower
@@ -1365,10 +1362,6 @@
         mapWatchKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapWatchKeys;
     WalletBatch *&
         encrypted_batch GUARDED_BY(cs_wallet) = m_spk_man->encrypted_batch;
-    std::set<int64_t> &setInternalKeyPool GUARDED_BY(cs_wallet) =
-        m_spk_man->setInternalKeyPool;
-    std::set<int64_t> &setExternalKeyPool GUARDED_BY(cs_wallet) =
-        m_spk_man->setExternalKeyPool;
     int64_t &nTimeFirstKey GUARDED_BY(cs_wallet) = m_spk_man->nTimeFirstKey;
     using CryptedKeyMap = LegacyScriptPubKeyMan::CryptedKeyMap;
 };
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -3386,6 +3386,16 @@
     return count;
 }
 
+unsigned int CWallet::GetKeyPoolSize() const {
+    AssertLockHeld(cs_wallet);
+
+    unsigned int count = 0;
+    if (auto spk_man = m_spk_man.get()) {
+        count += spk_man->GetKeyPoolSize();
+    }
+    return count;
+}
+
 bool CWallet::TopUpKeyPool(unsigned int kpSize) {
     bool res = true;
     if (auto spk_man = m_spk_man.get()) {