diff --git a/Gui/VtkVis/VtkVisTabWidget.cpp b/Gui/VtkVis/VtkVisTabWidget.cpp
index 42a604ffbe30bcfc013a7e02cef12260afc42b56..90165361f9938b99c91d866fbe4ae777004dc3d0 100644
--- a/Gui/VtkVis/VtkVisTabWidget.cpp
+++ b/Gui/VtkVis/VtkVisTabWidget.cpp
@@ -39,7 +39,7 @@
 #include <vtkPointData.h>
 
 VtkVisTabWidget::VtkVisTabWidget( QWidget* parent /*= 0*/ )
-	: QWidget(parent)
+	: QWidget(parent), _item(nullptr)
 {
 	setupUi(this);