diff --git a/qglview/qglview.cpp b/qglview/qglview.cpp
index 07710da..b079017 100644
--- a/qglview/qglview.cpp
+++ b/qglview/qglview.cpp
@@ -539,6 +539,7 @@ void QGLView::applyFog() {
 
 void QGLView::resizeGL(int width, int height) {
 	if (!is_init) return;
+	if (width <= 0 || height <= 0) return;
 	aspect = double(width) / double(height);
 	if (renderer_) renderer_->resize(width, height);
 	//qDebug() << "resize" << width << height;