diff --git a/mercurial/crecord.py b/mercurial/crecord.py
--- a/mercurial/crecord.py
+++ b/mercurial/crecord.py
@@ -1944,7 +1944,7 @@ are you sure you want to review/edit and
         """
 
         origsigwinch = sentinel = object()
-        if util.safehasattr(signal, b'SIGWINCH'):
+        if util.safehasattr(signal, 'SIGWINCH'):
             origsigwinch = signal.signal(signal.SIGWINCH, self.sigwinchhandler)
         try:
             return self._main(stdscr)