diff --git a/gluon/contenttype.py b/gluon/contenttype.py
index 7dd28f35..e5f6dd3c 100644
--- a/gluon/contenttype.py
+++ b/gluon/contenttype.py
@@ -330,7 +330,7 @@ CONTENT_TYPE = {
     '.lha': 'application/x-lha',
     '.lhs': 'text/x-literate-haskell',
     '.lhz': 'application/x-lhz',
-    '.load' : 'text/html',
+    '.load': 'text/html',
     '.log': 'text/x-log',
     '.lrz': 'application/x-lrzip',
     '.ltx': 'text/x-tex',
@@ -823,7 +823,7 @@ CONTENT_TYPE = {
     '.xsd': 'application/xml',
     '.xsl': 'application/xslt+xml',
     '.xslfo': 'text/x-xslfo',
-    '.xslm' : 'application/vnd.ms-excel.sheet.macroEnabled.12',
+    '.xslm': 'application/vnd.ms-excel.sheet.macroEnabled.12',
     '.xslt': 'application/xslt+xml',
     '.xspf': 'application/xspf+xml',
     '.xul': 'application/vnd.mozilla.xul+xml',
@@ -843,7 +843,7 @@ def contenttype(filename, default='text/plain'):
     """
     Returns the Content-Type string matching extension of the given filename.
     """
-    filename=to_native(filename)
+    filename = to_native(filename)
     i = filename.rfind('.')
     if i >= 0:
         default = CONTENT_TYPE.get(filename[i:].lower(), default)