diff --git a/tests/cris/check_btst.s b/tests/cris/check_btst.s
index 7418177..1c10cf3 100644
--- a/tests/cris/check_btst.s
+++ b/tests/cris/check_btst.s
@@ -84,4 +84,12 @@
  move.d 0x1111,r3
  checkr3 1111
 
+ ; check that X gets cleared and that only the NZ flags are touched.
+ move.d	0xff, $r0
+ move $r0, $ccs
+ btst r3,r3
+ move $ccs, $r0
+ cmp.d	0xe3, $r0
+ test_cc 0 1 0 0
+
  quit