Index: /trunk/src/VBox/Installer/win/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Installer/win/Makefile.kmk	(revision 68063)
+++ /trunk/src/VBox/Installer/win/Makefile.kmk	(revision 68064)
@@ -583,4 +583,5 @@
 		-E 'VBOX_WITH_WEBSERVICES=$(if $(VBOX_WITH_WEBSERVICES),yes,no)' \
 		-E 'VBOX_WITH_SDS=$(if $(VBOX_WITH_SDS),yes,no)' \
+		-E 'VBOX_WITH_UNATTENDED=$(if $(VBOX_WITH_UNATTENDED),yes,no)' \
 		-E 'BUILD_TYPE=$(KBUILD_TYPE)' \
 		-E 'BUILD_TARGET_ARCH=$(KBUILD_TARGET_ARCH)' \
@@ -674,4 +675,5 @@
 		-E 'VBOX_WITH_WEBSERVICES=$(if $(VBOX_WITH_WEBSERVICES),yes,no)' \
 		-E 'VBOX_WITH_SDS=$(if $(VBOX_WITH_SDS),yes,no)' \
+		-E 'VBOX_WITH_UNATTENDED=$(if $(VBOX_WITH_UNATTENDED),yes,no)' \
 		-E 'BUILD_TYPE=$(KBUILD_TYPE)' \
 		-E 'BUILD_TARGET_ARCH=$(KBUILD_TARGET_ARCH)' \