=== modified file 'bzrlib/log.py'
--- bzrlib/log.py	2010-07-16 13:29:07 +0000
+++ bzrlib/log.py	2011-04-02 02:09:01 +0000
@@ -354,7 +354,8 @@
         # Tweak the LogRequest based on what the LogFormatter can handle.
         # (There's no point generating stuff if the formatter can't display it.)
         rqst = self.rqst
-        rqst['levels'] = lf.get_levels()
+        if lf.get_levels() > rqst['levels']:
+            rqst['levels'] = lf.get_levels()
         if not getattr(lf, 'supports_tags', False):
             rqst['generate_tags'] = False
         if not getattr(lf, 'supports_delta', False):