diff --git a/src/gui/accountsettings.cpp b/src/gui/accountsettings.cpp
index 47a0bd9666..6bee0c9353 100644
--- a/src/gui/accountsettings.cpp
+++ b/src/gui/accountsettings.cpp
@@ -362,6 +362,7 @@ void AccountSettings::slotAddFolder()
     folderMan->setSyncEnabled(false); // do not start more syncs.
 
     FolderWizard *folderWizard = new FolderWizard(_accountState->account(), this);
+    folderWizard->setAttribute(Qt::WA_DeleteOnClose);
 
     connect(folderWizard, &QDialog::accepted, this, &AccountSettings::slotFolderWizardAccepted);
     connect(folderWizard, &QDialog::rejected, this, &AccountSettings::slotFolderWizardRejected);