diff --git a/src/key.h b/src/key.h
--- a/src/key.h
+++ b/src/key.h
@@ -188,6 +188,8 @@
         s.read((char *)&code[0], len);
         Decode(code);
     }
+
+    CExtKey() = default;
 };
 
 /**
diff --git a/src/pubkey.h b/src/pubkey.h
--- a/src/pubkey.h
+++ b/src/pubkey.h
@@ -228,6 +228,8 @@
         s.read((char *)&code[0], len);
         Decode(code);
     }
+
+    CExtPubKey() = default;
 };
 
 /**
diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h
--- a/src/wallet/walletdb.h
+++ b/src/wallet/walletdb.h
@@ -262,6 +262,7 @@
     bool TxnCommit();
     //! Abort current transaction
     bool TxnAbort();
+
 private:
     BerkeleyBatch m_batch;
     WalletDatabase &m_database;