diff --git a/gunicorn/arbiter.py b/gunicorn/arbiter.py
index e3146dba..4e631dc5 100644
--- a/gunicorn/arbiter.py
+++ b/gunicorn/arbiter.py
@@ -251,7 +251,8 @@ class Arbiter(object):
     def handle_winch(self):
         "SIGWINCH handling"
         if os.getppid() == 1 or os.getpgrp() != os.getpid():
-            self.logger.info("graceful stop of workers")
+            self.log.info("graceful stop of workers")
+            self.num_workers = 0
             self.kill_workers(signal.SIGQUIT)
         else:
             self.log.info("SIGWINCH ignored. Not daemonized")