diff --git a/sample/wallpaper/appl/WidgetDisplay.cpp b/sample/wallpaper/appl/WidgetDisplay.cpp
index a0989303..4a92b3b0 100644
--- a/sample/wallpaper/appl/WidgetDisplay.cpp
+++ b/sample/wallpaper/appl/WidgetDisplay.cpp
@@ -8,6 +8,7 @@
 
 #include <appl/debug.hpp>
 #include <etk/tool.hpp>
+#include <ewol/object/Manager.hpp>
 
 appl::WidgetDisplay::WidgetDisplay() {
 	addObjectType("appl::WidgetDisplay");
@@ -17,7 +18,7 @@ appl::WidgetDisplay::WidgetDisplay() {
 void appl::WidgetDisplay::init() {
 	ewol::Widget::init();
 	m_compositing.setSource("DATA:SnowFlake.svg", ivec2(128,128));
-	periodicCallEnable();
+	getObjectManager().periodicCall.connect(sharedFromThis(), &appl::WidgetDisplay::periodicCall);
 	for (int32_t iii=0; iii<250 ; ++iii) {
 		m_elements.push_back(appl::WidgetDisplay::Element());
 	}
diff --git a/sample/wallpaper/appl/WidgetDisplay.hpp b/sample/wallpaper/appl/WidgetDisplay.hpp
index af5df99b..47109d05 100644
--- a/sample/wallpaper/appl/WidgetDisplay.hpp
+++ b/sample/wallpaper/appl/WidgetDisplay.hpp
@@ -38,9 +38,9 @@ namespace appl {
 			std::vector<Element> m_elements;
 		public: // Derived function
 			void onRegenerateDisplay();
-			virtual void periodicCall(const ewol::event::Time& _event);
-			virtual bool onEventInput(const ewol::event::Input& _event);
-			virtual void onDraw();
+			void periodicCall(const ewol::event::Time& _event);
+			bool onEventInput(const ewol::event::Input& _event) override;
+			void onDraw() override;
 	};
 }