Index: /trunk/Config.kmk
===================================================================
--- /trunk/Config.kmk	(revision 48314)
+++ /trunk/Config.kmk	(revision 48315)
@@ -1028,4 +1028,7 @@
   VBOX_WITH_DOCS=
   VBOX_WITH_DOCS_PACKING=
+ endif
+ if1of ($(KBUILD_TARGET), solaris)
+  VBOX_WITH_32_ON_64_MAIN_API=
  endif
  # Enable any translations in OSE, even partial ones.