Index: /trunk/src/VBox/Main/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Main/Makefile.kmk	(revision 59873)
+++ /trunk/src/VBox/Main/Makefile.kmk	(revision 59874)
@@ -969,5 +969,9 @@
 ifeq ($(KBUILD_TARGET).$(VBOX_VCC_CRT_TYPE),win.d)
  LIBRARIES += VBoxCOM-GUI
- USES += qt4
+ ifeq ($(VBOX_WITH_QTGUI_V5),)
+  USES += qt4
+ else # VBOX_WITH_QTGUI_V5
+  USES += qt5
+ endif # VBOX_WITH_QTGUI_V5
  VBoxCOM-GUI_TEMPLATE = VBOXQTGUI$(if-expr defined(VBOX_WITH_HARDENING),,EXE)
  VBoxCOM-GUI_EXTENDS  = VBoxCOM