Index: /trunk/src/VBox/Frontends/VirtualBox/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/Makefile.kmk	(revision 27481)
+++ /trunk/src/VBox/Frontends/VirtualBox/Makefile.kmk	(revision 27482)
@@ -41,5 +41,5 @@
 # Build new VirtualBox FE/Qt4 GUI runtime core.
 # Currently its not used, you can build it for developing purposes.
-#VBOX_WITH_NEW_RUNTIME_CORE := 1
+VBOX_WITH_NEW_RUNTIME_CORE := 1
 # Force the usage of the new runtime core for the single monitor case also.
 #VBOX_FORCE_NEW_RUNTIME_CORE_ALWAYS := 1