--- a/debian/rules.defs	2012-04-02 10:40:36.000000000 +0200
+++ b/debian/rules.defs	2012-04-02 10:02:51.000000000 +0200
@@ -391,7 +391,7 @@
 ifndef DEB_STAGE
 # Ada --------------------
 ada_no_cpus	:= m32r sh3 sh3eb sh4 sh4eb
-ada_no_systems	:= gnu knetbsd-gnu
+ada_no_systems	:=
 ada_no_cross	:= yes
 ada_no_snap	:= no
 ifneq (,$(filter $(DEB_TARGET_ARCH),armhf m68k powerpcspe sh4 sparc64))