--- VirtualBox-7.1.10/src/VBox/Main/Makefile.kmk.orig
+++ VirtualBox-7.1.10/src/VBox/Main/Makefile.kmk
@@ -794,6 +794,9 @@
  ifdef VBOX_WITH_3D_ACCELERATION
   VBoxSVC_DEFS += VBOX_WITH_3D_ACCELERATION
  endif
+ ifdef VBOX_WITH_VIDEOHWACCEL
+  VBoxSVC_DEFS += VBOX_WITH_VIDEOHWACCEL
+ endif
 
  ifeq ($(KBUILD_TYPE),debug)
   VBoxSVC_LDFLAGS.linux  += -rdynamic # for backtrace_symbols()