diff --git a/basis/math/functions/functions-tests.factor b/basis/math/functions/functions-tests.factor
index fce60c6c20..bc468931e1 100644
--- a/basis/math/functions/functions-tests.factor
+++ b/basis/math/functions/functions-tests.factor
@@ -199,10 +199,10 @@ CONSTANT: log10-factorial-1000 0x1.40f3593ed6f8ep11
 ! XXX: disabling to get linux32 binary
 ! HACK: bug in factor or in vmware?
 ! TODO: fix this test on linux32 vmware
-!  { { +fp-invalid-operation+ } } [ [ nan: 4000000000000 truncate drop ] collect-fp-exceptions ] unit-test
-{ { +fp-invalid-operation+ } } [ [ nan: 4000000000000 round drop ] collect-fp-exceptions ] unit-test
-{ { +fp-invalid-operation+ } } [ [ nan: 4000000000000 ceiling drop ] collect-fp-exceptions ] unit-test
-{ { +fp-invalid-operation+ } } [ [ nan: 4000000000000 floor drop ] collect-fp-exceptions ] unit-test
+!  { { +fp-invalid-operation+ } } [ [ NAN: 4000000000000 truncate drop ] collect-fp-exceptions ] unit-test
+{ { +fp-invalid-operation+ } } [ [ NAN: 4000000000000 round drop ] collect-fp-exceptions ] unit-test
+{ { +fp-invalid-operation+ } } [ [ NAN: 4000000000000 ceiling drop ] collect-fp-exceptions ] unit-test
+{ { +fp-invalid-operation+ } } [ [ NAN: 4000000000000 floor drop ] collect-fp-exceptions ] unit-test
 
 { -5 } [ -4-3/5 round-to-even ] unit-test
 { -4 } [ -4-1/2 round-to-even ] unit-test