diff --git a/beets/mediafile.py b/beets/mediafile.py
index 27d77bed4..a889f692b 100644
--- a/beets/mediafile.py
+++ b/beets/mediafile.py
@@ -861,7 +861,7 @@ class MediaFile(object):
         etc = StorageStyle('ASIN'),
     )
     catalognum = MediaField(
-        mp3 = StorageStyle('TXXX', id3_desc=u'TXXX:CATALOGNUMBER'),
+        mp3 = StorageStyle('TXXX', id3_desc=u'CATALOGNUMBER'),
         mp4 = StorageStyle("----:com.apple.iTunes:CATALOGNUMBER"),
         etc = StorageStyle('CATALOGNUMBER'),
     )
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 7b8b99c74..4b035fbc5 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -17,6 +17,7 @@ Changelog
   copied. This solves a problem (introduced in 1.0b14) where beets could crash
   after adding files to the library but before finishing copying them; during
   the next import, the (external) files would be moved instead of copied.
+* Fix ID3 tag name for the catalog number field.
 
 1.0b14 (May 12, 2012)
 ---------------------