diff --git a/src/calibre/__init__.py b/src/calibre/__init__.py
index 0687afd5b2..285b2d35b4 100644
--- a/src/calibre/__init__.py
+++ b/src/calibre/__init__.py
@@ -30,6 +30,7 @@ mimetypes.add_type('application/epub+zip',                '.epub')
 mimetypes.add_type('text/x-sony-bbeb+xml',                '.lrs')
 mimetypes.add_type('application/xhtml+xml',               '.xhtml')
 mimetypes.add_type('image/svg+xml',                       '.svg')
+mimetypes.add_type('text/fb2+xml',                        '.fb2')
 mimetypes.add_type('application/x-sony-bbeb',             '.lrf')
 mimetypes.add_type('application/x-sony-bbeb',             '.lrx')
 mimetypes.add_type('application/x-dtbncx+xml',            '.ncx')
@@ -43,7 +44,7 @@ mimetypes.add_type('application/x-mobipocket-ebook',      '.prc')
 mimetypes.add_type('application/x-mobipocket-ebook',      '.azw')
 mimetypes.add_type('application/x-cbz',                   '.cbz')
 mimetypes.add_type('application/x-cbr',                   '.cbr')
-mimetypes.add_type('application/x-koboreader-ebook',      '.kobo') 
+mimetypes.add_type('application/x-koboreader-ebook',      '.kobo')
 mimetypes.add_type('image/wmf',                           '.wmf')
 guess_type = mimetypes.guess_type
 import cssutils