diff --git a/src/mesh_viewer.cpp b/src/mesh_viewer.cpp
index 07105da..8662b65 100644
--- a/src/mesh_viewer.cpp
+++ b/src/mesh_viewer.cpp
@@ -103,7 +103,7 @@ void MeshViewer::removeMesh(const MyMesh &mesh) {
 
 
 void MeshViewer::mousePressEvent(QMouseEvent *e) {
-	if (e->button() == Qt::LeftButton) {
+	if (e->button() == Qt::MiddleButton) {
 		mouse_pos = e->pos();
 	}
 }
@@ -116,7 +116,7 @@ void MeshViewer::mouseReleaseEvent(QMouseEvent *e) {
 
 
 void MeshViewer::mouseMoveEvent(QMouseEvent *e) {
-	if (e->buttons() & Qt::LeftButton) {
+	if (e->buttons() & Qt::MiddleButton) {
 		QPoint delta = e->pos() - mouse_pos;
 		rot = rot_start;
 		rot.rotate(delta.x() / 5., 0, 1, 0);