diff --git a/glymur/jp2box.py b/glymur/jp2box.py
index 39f2f16..b6f92f7 100644
--- a/glymur/jp2box.py
+++ b/glymur/jp2box.py
@@ -433,7 +433,8 @@ class ChannelDefinitionBox(Jp2kBox):
     association : int
         index of the associated color
     """
-    def __init__(self, index=None, channel_type=None, association=None, **kwargs):
+    def __init__(self, index=None, channel_type=None, association=None,
+                 **kwargs):
         Jp2kBox.__init__(self, box_id='cdef', longname='Channel Definition')
 
         # channel type and association must be specified.
@@ -513,8 +514,8 @@ class ChannelDefinitionBox(Jp2kBox):
         channel_type = data[1:num_components * 6:3]
         association = data[2:num_components * 6:3]
 
-        box = ChannelDefinitionBox(index=index, channel_type=channel_type, 
-                                   association=association, length=length, 
+        box = ChannelDefinitionBox(index=index, channel_type=channel_type,
+                                   association=association, length=length,
                                    offset=offset)
         return box
 
diff --git a/glymur/lib/openjpeg.py b/glymur/lib/openjpeg.py
index 6a984b9..3dd0592 100644
--- a/glymur/lib/openjpeg.py
+++ b/glymur/lib/openjpeg.py
@@ -23,7 +23,7 @@ def version():
 
 # Need to get the minor version, make sure we are at least at 1.4.x
 #import pdb; pdb.set_trace()
-_minor = version().split('.')[1]
+_MINOR = version().split('.')[1]
 
 
 class EventMgrType(ctypes.Structure):
@@ -103,7 +103,7 @@ class DecompressionParametersType(ctypes.Structure):
                 # entire codestream or be limited to the main header
                 ("cp_limit_decoding", ctypes.c_int)]
 
-    if _minor != '4':
+    if _MINOR == '5':
         _fields_.append(("flags",             ctypes.c_uint))