Index: wengophone/src/presentation/qt/history/QtHistory.cpp
===================================================================
--- wengophone/src/presentation/qt/history/QtHistory.cpp	(revision 333)
+++ wengophone/src/presentation/qt/history/QtHistory.cpp	(revision 446)
@@ -228,4 +228,7 @@
 	HistoryMemento* memento = collection->getMemento(id);
 
+	if(!memento)
+		return;
+
 	QtWengoPhone * qtWengoPhone = (QtWengoPhone *) _cHistory.getCWengoPhone().getPresentation();