diff --git a/celery/worker/pidbox.py b/celery/worker/pidbox.py
@@ -66,7 +66,7 @@ def _close_channel(self, c):
    def shutdown(self, c):
        self.on_stop()
        if self.consumer:
-            debug('Cancelling broadcast consumer...')
+            debug('Canceling broadcast consumer...')
            ignore_errors(c, self.consumer.cancel)
        self.stop(self.c)

diff --git a/docs/configuration.rst b/docs/configuration.rst
@@ -1867,8 +1867,9 @@ Name of the pool class used by the worker.
 .. admonition:: Eventlet/Gevent

    Never use this option to select the eventlet or gevent pool.
-    You must use the `-P` option instead, otherwise the monkey patching
-    will happen too late and things will break in strange and silent ways.
+    You must use the `-P` option to :program:`celery worker` instead, to
+    ensure the monkey patches are not applied too late, causing things
+    to break in strange ways.

 Default is ``celery.concurrency.prefork:TaskPool``.

diff --git a/docs/userguide/workers.rst b/docs/userguide/workers.rst
@@ -628,8 +628,8 @@ even other options::

 .. control:: cancel_consumer

-Queues: Cancelling consumers
----------------------------
+Queues: Canceling consumers
+---------------------------

 You can cancel a consumer by queue name using the :control:`cancel_consumer`
 control command.