diff --git a/basis/tools/disassembler/disassembler-tests.factor b/basis/tools/disassembler/disassembler-tests.factor
index 96f5a04378..49cfb054a1 100644
--- a/basis/tools/disassembler/disassembler-tests.factor
+++ b/basis/tools/disassembler/disassembler-tests.factor
@@ -3,4 +3,4 @@ USING: math classes.tuple prettyprint.custom
 tools.disassembler tools.test strings ;
 
 [ ] [ \ + disassemble ] unit-test
-[ ] [ { string pprint* } disassemble ] unit-test
+[ ] [ M\ string pprint* disassemble ] unit-test