Index: /trunk/Config.kmk
===================================================================
--- /trunk/Config.kmk	(revision 40956)
+++ /trunk/Config.kmk	(revision 40957)
@@ -625,5 +625,5 @@
 endif
 # Set this to enable dtrace probes in platform agnostic kernel code.
-ifn1of ($(KBUILD_TARGET), os2 linux windows)
+ifn1of ($(KBUILD_TARGET), os2)
  VBOX_WITH_DTRACE_R0 = 1
 endif