diff -r 8a3047468994 -r 3016b494685c src/mainwindow.cpp
--- a/src/mainwindow.cpp	Wed Mar 09 13:01:50 2022 +0200
+++ b/src/mainwindow.cpp	Wed Mar 09 13:14:40 2022 +0200
@@ -199,7 +199,12 @@
 		this->statusBar()->showMessage(newStatusText);
 	});
 	const QFileInfo fileInfo{*this->documents.modelPath(modelId)};
-	this->ui->tabs->addTab(document, fileInfo.baseName());
+	QString tabName = fileInfo.baseName();
+	if (tabName.isEmpty())
+	{
+		tabName = tr("<unnamed>");
+	}
+	this->ui->tabs->addTab(document, tabName);
 	this->ui->tabs->setCurrentWidget(document);
 	document->restoreSplitterState(this->documentSplitterState);
 }