diff --git a/sources/projectview.cpp b/sources/projectview.cpp
index c466a0999..73966d1c9 100644
--- a/sources/projectview.cpp
+++ b/sources/projectview.cpp
@@ -756,7 +756,7 @@ void ProjectView::initWidgets() {
 	m_tab -> setMovable(true);
 
 	QHBoxLayout *TopRightCorner_Layout = new QHBoxLayout();
-	TopRightCorner_Layout->setMargin(0);
+	TopRightCorner_Layout->setContentsMargins(0,0,0,0);
 
 	QToolButton *add_new_diagram_button = new QToolButton;
 	add_new_diagram_button -> setDefaultAction(m_add_new_diagram);