--- src/VBox/Additions/x11/vboxmouse/Makefile.kmk.orig	2019-01-25 18:24:30 UTC
+++ src/VBox/Additions/x11/vboxmouse/Makefile.kmk
@@ -227,10 +227,22 @@ endif # neq ($(KBUILD_TARGET),linux)
 
 
 ifdef VBOX_USE_SYSTEM_XORG_HEADERS
- # As vboxmouse_drv is not needed at all for X.Org Server 1.7 and later do not
- # build it in this case.
- DLLS    := $(filter-out vboxmouse_drv_%,$(DLLS))
- SYSMODS := $(filter-out vboxmouse_drv%,$(SYSMODS))
+ ifeq ($(KBUILD_TARGET),freebsd)
+  DLLS += vboxmouse_drv_system
+  vboxmouse_drv_system_TEMPLATE = VBOXGUESTR3XORGMOD
+  vboxmouse_drv_system_DEFS := $(vboxmouse_drv_70_DEFS) NO_ANSIC
+  vboxmouse_drv_system_INCS := \
+	/usr/local/include/pixman-1 \
+	/usr/local/include/xorg \
+	$(PATH_SUB_CURRENT)
+  vboxmouse_drv_system_SOURCES = \
+	vboxmouse.c
+ else
+  # As vboxmouse_drv is not needed at all for X.Org Server 1.7 and later do not
+  # build it in this case.
+   DLLS    := $(filter-out vboxmouse_drv_%,$(DLLS))
+  SYSMODS := $(filter-out vboxmouse_drv%,$(SYSMODS))
+ endif
 endif