diff --git a/hgext/gpg.py b/hgext/gpg.py
--- a/hgext/gpg.py
+++ b/hgext/gpg.py
@@ -227,7 +227,7 @@ def sign(ui, repo, *revs, **opts):
         data = node2txt(repo, n, sigver)
         sig = mygpg.sign(data)
         if not sig:
-            raise util.abort(_("error while signing"))
+            raise util.Abort(_("error while signing"))
         sig = binascii.b2a_base64(sig)
         sig = sig.replace("\n", "")
         sigmessage += "%s %s %s\n" % (hexnode, sigver, sig)
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1270,7 +1270,7 @@ def debugindex(ui, repo, file_, **opts):
 
     format = opts.get('format', 0)
     if format not in (0, 1):
-        raise util.abort("unknown format %d" % format)
+        raise util.Abort("unknown format %d" % format)
 
     if not r:
         r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)