diff -r 6f1fcbc58efa -r 9451a941c536 hgext/convert/git.py
--- a/hgext/convert/git.py	Sun Feb 03 21:03:46 2008 -0200
+++ b/hgext/convert/git.py	Sun Feb 03 21:03:46 2008 -0200
@@ -99,7 +99,6 @@
         tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:]
         tz = -int(tzs) * (int(tzh) * 3600 + int(tzm))
         date = tm + " " + str(tz)
-        author = author or "unknown"
 
         c = commit(parents=parents, date=date, author=author, desc=message,
                    rev=version)