diff --git a/src/qt/walletview.h b/src/qt/walletview.h
--- a/src/qt/walletview.h
+++ b/src/qt/walletview.h
@@ -70,7 +70,7 @@
 
     TransactionView *transactionView;
 
-    QProgressDialog *progressDialog;
+    QProgressDialog *progressDialog{nullptr};
     const PlatformStyle *platformStyle;
 
 public Q_SLOTS: