--- src/VBox/HostDrivers/VBoxNetAdp/Makefile.kmk.orig	2019-05-13 13:33:07 UTC
+++ src/VBox/HostDrivers/VBoxNetAdp/Makefile.kmk
@@ -206,10 +206,14 @@ $$(VBoxNetAdp-src_0_OUTDIR)/Makefile: \
 		$$(if $$(eq $$(VBoxNetAdp/freebsd/Makefile_VBOX_HARDENED),$$(VBOX_WITH_HARDENING)),,FORCE) \
 		| $$(dir $$@)
 	$(QUIET)$(RM) -f -- $@
- ifndef VBOX_WITH_HARDENING
-	$(QUIET)$(SED) -e "s;VBOX_WITH_HARDENING;;g" --output $@ $<
- else
 	$(QUIET)$(CP) -f $< $@
+ ifndef VBOX_WITH_HARDENING
+	$(QUIET)$(SED) -e "s;-DVBOX_WITH_HARDENING;;g" --output $@.tmp $@
+	$(QUIET)$(MV) -f $@.tmp $@
+ endif
+ ifndef VBOX_WITH_NETFLT_VIMAGE
+	$(QUIET)$(SED) -e "s;-DVIMAGE;;g" --output $@.tmp $@
+	$(QUIET)$(MV) -f $@.tmp $@
  endif
 
 endif # freebsd