diff --git a/src/qt/walletmodel.h b/src/qt/walletmodel.h
--- a/src/qt/walletmodel.h
+++ b/src/qt/walletmodel.h
@@ -201,10 +201,12 @@
 
         bool isValid() const { return valid; }
 
-        // Copy operator and constructor transfer the context
-        UnlockContext(const UnlockContext &obj) { CopyFrom(obj); }
-        UnlockContext &operator=(const UnlockContext &rhs) {
-            CopyFrom(rhs);
+        // Copy constructor is disabled.
+        UnlockContext(const UnlockContext &) = delete;
+        // Move operator and constructor transfer the context
+        UnlockContext(UnlockContext &&obj) { CopyFrom(std::move(obj)); }
+        UnlockContext &operator=(UnlockContext &&rhs) {
+            CopyFrom(std::move(rhs));
             return *this;
         }
 
@@ -214,7 +216,8 @@
         // mutable, as it can be set to false by copying
         mutable bool relock;
 
-        void CopyFrom(const UnlockContext &rhs);
+        UnlockContext &operator=(const UnlockContext &) = default;
+        void CopyFrom(UnlockContext &&rhs);
     };
 
     UnlockContext requestUnlock();
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -470,7 +470,7 @@
     }
 }
 
-void WalletModel::UnlockContext::CopyFrom(const UnlockContext &rhs) {
+void WalletModel::UnlockContext::CopyFrom(UnlockContext &&rhs) {
     // Transfer context; old object no longer relocks wallet
     *this = rhs;
     rhs.relock = false;