diff --git a/cps/__init__.py b/cps/__init__.py
index 5d870bf6..c4150942 100644
--- a/cps/__init__.py
+++ b/cps/__init__.py
@@ -64,8 +64,8 @@ mimetypes.add_type('application/x-cbr', '.cbr')
 mimetypes.add_type('application/x-cbz', '.cbz')
 mimetypes.add_type('application/x-tar', '.cbt')
 mimetypes.add_type('application/x-7z-compressed', '.cb7')
-mimetypes.add_type('image/vnd.djv', '.djv')
-mimetypes.add_type('image/vnd.djv', '.djvu')
+mimetypes.add_type('image/vnd.djvu', '.djv')
+mimetypes.add_type('image/vnd.djvu', '.djvu')
 mimetypes.add_type('application/mpeg', '.mpeg')
 mimetypes.add_type('audio/mpeg', '.mp3')
 mimetypes.add_type('audio/x-m4a', '.m4a')