diff --git a/Lib/test/crashers/bogus_code_obj.py b/Lib/test/crashers/bogus_code_obj.py
index 43815c1b1cd..198d229491b 100644
--- a/Lib/test/crashers/bogus_code_obj.py
+++ b/Lib/test/crashers/bogus_code_obj.py
@@ -14,6 +14,6 @@ the user build or load random bytecodes anyway.  Otherwise, this is a
 
 import types
 
-co = types.CodeType(0, 0, 0, 0, '\x04\x71\x00\x00', (),
-                    (), (), '', '', 1, '')
+co = types.CodeType(0, 0, 0, 0, 0, b'\x04\x71\x00\x00',
+                    (), (), (), '', '', 1, b'')
 exec(co)