Index: /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserItemMachine.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserItemMachine.cpp	(revision 55144)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserItemMachine.cpp	(revision 55145)
@@ -241,4 +241,5 @@
     /* Get new state-pixmap and state-pixmap size: */
     const QIcon stateIcon = machineStateIcon();
+    AssertReturnVoid(!stateIcon.isNull());
     const QSize statePixmapSize = stateIcon.availableSizes().first();
     const QPixmap statePixmap = stateIcon.pixmap(statePixmapSize);