diff --git a/src/gui/MainWindow.cpp b/src/gui/MainWindow.cpp
index 6ff55f06f..c047bf96c 100644
--- a/src/gui/MainWindow.cpp
+++ b/src/gui/MainWindow.cpp
@@ -802,7 +802,10 @@ void MainWindow::restoreWidgetState( QWidget * _w, const QDomElement & _de )
 		// first restore the window, as attempting to resize a maximized window causes graphics glitching
 		_w->setWindowState( _w->windowState() & ~(Qt::WindowMaximized | Qt::WindowMinimized) );
 
-		_w->resize( r.size() );
+		// Check isEmpty() to work around corrupt project files with empty size
+		if ( ! r.size().isEmpty() ) {
+			_w->resize( r.size() );
+		}
 		_w->move( r.topLeft() );
 
 		// set the window to its correct minimized/maximized/restored state