Regression
diff --git a/src/VERSION b/src/VERSION
index 9efae28..7a13148 100644
--- a/src/VERSION
+++ b/src/VERSION
@@ -1 +1 @@
-"0.3.1"
+"0.3.2"
diff --git a/src/_constants.pyx b/src/_constants.pyx
index 6a8c04c..dcd6295 100644
--- a/src/_constants.pyx
+++ b/src/_constants.pyx
@@ -4,7 +4,7 @@
 cdef object CONST_NEG_INF = float('-Infinity')
 
 cdef object DATETIME_CLASSES = date, time, datetime
-cdef object ORD_CLASSES = unicode, bytes, bytearray
+cdef object ORD_CLASSES = (unicode, bytes, bytearray)
 
 cdef object UCS1_COMPATIBLE_CODECS = frozenset((
     # ASCII