Index: /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsInterface.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsInterface.cpp	(revision 66495)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/settings/machine/UIMachineSettingsInterface.cpp	(revision 66496)
@@ -452,7 +452,7 @@
     {
         /* Get old interface data from the cache: */
-        const UIDataSettingsMachineInterface &oldInterfaceData = m_pCache->base();
+        const UIDataSettingsMachineInterface &oldInterfaceData = m_pCache->base(); Q_UNUSED(oldInterfaceData);
         /* Get new interface data from the cache: */
-        const UIDataSettingsMachineInterface &newInterfaceData = m_pCache->data();
+        const UIDataSettingsMachineInterface &newInterfaceData = m_pCache->data(); Q_UNUSED(newInterfaceData);
 
 #ifndef VBOX_WS_MAC