diff --git a/src/QGLView.cc b/src/QGLView.cc
index 9c23cb96..1db48a92 100644
--- a/src/QGLView.cc
+++ b/src/QGLView.cc
@@ -308,7 +308,7 @@ bool QGLView::save(const char *filename)
 
 void QGLView::wheelEvent(QWheelEvent *event)
 {
-	this->cam.zoom(event->delta());
+	this->cam.zoom(event->angleDelta().y());
   updateGL();
 }