diff -r e4803231f538 -r 7e9997041781 hgext/amend.py
--- a/hgext/amend.py	Sat Sep 14 15:13:16 2019 -0400
+++ b/hgext/amend.py	Sat Sep 14 18:44:18 2019 -0400
@@ -16,7 +16,6 @@
 from mercurial import (
     cmdutil,
     commands,
-    error,
     pycompat,
     registrar,
 )
@@ -50,8 +49,8 @@
     See :hg:`help commit` for more details.
     """
     opts = pycompat.byteskwargs(opts)
-    if len(opts['note']) > 255:
-        raise error.Abort(_("cannot store a note of more than 255 bytes"))
+    cmdutil.checknotesize(ui, opts)
+
     with repo.wlock(), repo.lock():
         if not opts.get('logfile'):
             opts['message'] = opts.get('message') or repo['.'].description()