diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index c612164..914e044 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -236,7 +236,7 @@ void MainWindow::initMenu() {
     connect(ui->actionViewOnly,     &QAction::triggered, this, &MainWindow::showViewOnlyDialog);
 
     // [Wallet] -> [Advanced]
-    connect(ui->actionStore_wallet,          &QAction::triggered, [this]{m_ctx->wallet->store();});
+    connect(ui->actionStore_wallet,          &QAction::triggered, this, &MainWindow::tryStoreWallet);
     connect(ui->actionUpdate_balance,        &QAction::triggered, [this]{m_ctx->updateBalance();});
     connect(ui->actionRefresh_tabs,          &QAction::triggered, [this]{m_ctx->refreshModels();});
     connect(ui->actionRescan_spent,          &QAction::triggered, this, &MainWindow::rescanSpent);
@@ -530,6 +530,16 @@ void MainWindow::setStatusText(const QString &text, bool override, int timeout)
     }
 }
 
+void MainWindow::tryStoreWallet() {
+    if (m_ctx->wallet->connectionStatus() == Wallet::ConnectionStatus::ConnectionStatus_Synchronizing) {
+        QMessageBox::warning(this, "Save wallet", "Unable to save wallet during synchronization.\n\n"
+                                                  "Wait until synchronization is finished and try again.");
+        return;
+    }
+
+    m_ctx->wallet->store();
+}
+
 void MainWindow::onSynchronized() {
     this->updateNetStats();
     this->setStatusText("Synchronized");
diff --git a/src/MainWindow.h b/src/MainWindow.h
index 6def9dd..883329d 100644
--- a/src/MainWindow.h
+++ b/src/MainWindow.h
@@ -180,6 +180,7 @@ private slots:
     void onUpdatesAvailable(const QJsonObject &updates);
     void toggleSearchbar(bool enabled);
     void onSetStatusText(const QString &text);
+    void tryStoreWallet();
 
 private:
     friend WindowManager;