Index: trunk/translate/storage/mo.py
===================================================================
--- trunk.orig/translate/storage/mo.py
+++ trunk/translate/storage/mo.py
@@ -101,6 +101,9 @@ class mounit(base.TranslationUnit):
 class mofile(base.TranslationStore):
     """A class representing a .mo file."""
     UnitClass = mounit
+    name = "Gettext MO file"
+    extension = ("*.mo", "*.gmo")
+    mimetype = ("application/x-gettext-catalog", )
     def __init__(self, inputfile=None, unitclass=mounit):
         self.UnitClass = unitclass
         base.TranslationStore.__init__(self, unitclass=unitclass)