diff --git a/testing/test_junitxml.py b/testing/test_junitxml.py
index c82ee84c6..0f724b5c4 100644
--- a/testing/test_junitxml.py
+++ b/testing/test_junitxml.py
@@ -356,7 +356,7 @@ def test_invalid_xml_escape():
         unichr = chr
     u = py.builtin._totext
     invalid = (0x00, 0x1, 0xB, 0xC, 0xE, 0x19,
-                033, # issue #126
+                27, # issue #126
                0xD800, 0xDFFF, 0xFFFE, 0x0FFFF) #, 0x110000)
     valid = (0x9, 0xA, 0x20,) # 0xD, 0xD7FF, 0xE000, 0xFFFD, 0x10000, 0x10FFFF)