diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -1216,6 +1216,10 @@
         fInternal = false;
     }
 
+    CReserveKey() = default;
+    CReserveKey(const CReserveKey &) = delete;
+    CReserveKey &operator=(const CReserveKey &) = delete;
+
     ~CReserveKey() { ReturnKey(); }
 
     void ReturnKey();