diff --git a/src/viewer/simpleViewer.cpp b/src/viewer/simpleViewer.cpp
index 783be11..3b48615 100644
--- a/src/viewer/simpleViewer.cpp
+++ b/src/viewer/simpleViewer.cpp
@@ -187,7 +187,7 @@ void Viewer::mousePressEvent(QMouseEvent* e) {
 	std::cout << "Window geom: " << this->window()->size().width() << "w, " << this->window()->size().height() << "h" << endl;
 
 	QMatrix4x4 selectedPosition = pickGeom(x, y);
-	if(!selectedPosition.isIdentity())
+    if(!selectedPosition.isIdentity() && e->modifiers().testFlag(Qt::ShiftModifier))
 	{
 		Cube* c = new Cube;
 		c->setType(TEX_WOODFLOOR);