Index: /trunk/src/VBox/Additions/linux/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Additions/linux/Makefile.kmk	(revision 66029)
+++ /trunk/src/VBox/Additions/linux/Makefile.kmk	(revision 66030)
@@ -42,5 +42,6 @@
  		$$(vboxguest-src_2_STAGE_TARGETS) \
 		$$(vboxsf-mod_2_STAGE_TARGETS) \
-		$$(vboxvideo_drm-mod_2_STAGE_TARGETS)
+		$$(vboxvideo_drm-mod_2_STAGE_TARGETS) \
+               $$(GuestDrivers-src_2_STAGE_TARGETS)
 	$(QUIET)$(call MSG_L1,Doing a test build of the guest kernel modules)
 	$(QUIET)$(RM) -f -- "$@"