diff --git a/attachment_preview/__openerp__.py b/attachment_preview/__openerp__.py
index c5b86e8c..f82f178a 100644
--- a/attachment_preview/__openerp__.py
+++ b/attachment_preview/__openerp__.py
@@ -34,7 +34,7 @@ Acknowledgements
 
 Addon icon courtesy of http://commons.wikimedia.org/wiki/Crystal_Clear
     """,
-    "category" : "Knowledge Management",
+    "category": "Knowledge Management",
     "depends": [
         'web'
     ],
diff --git a/attachment_preview/model/ir_attachment.py b/attachment_preview/model/ir_attachment.py
index f36b8130..233a15a4 100644
--- a/attachment_preview/model/ir_attachment.py
+++ b/attachment_preview/model/ir_attachment.py
@@ -37,7 +37,7 @@ class IrAttachment(Model):
                 filename, extension = os.path.splitext(this.datas_fname)
                 extension = extension.lstrip('.')
             if not extension:
-                #TODO: lookup the extension via mimetype
+                # TODO: lookup the extension via mimetype
                 pass
             result[this.id] = extension
         return result if isinstance(ids, collections.Iterable) else result[ids]