diff --git a/flacinfo.py b/flacinfo.py
index e676ab2..35becaf 100755
--- a/flacinfo.py
+++ b/flacinfo.py
@@ -116,7 +116,7 @@ def edit_flac(args):
 def reverse_tag(vorbis_tag):
     """Reverses a Vorbis tag to an argument name"""
     for tag in VORBIS_ARG_NAME:
-        if VORBIS_ARG_NAME[tag] == vorbis_tag:
+        if VORBIS_ARG_NAME[tag].upper() == vorbis_tag.upper():
             return tag
     raise NoSuchTag(vorbis_tag)