diff --git a/docs/topics/settings.rst b/docs/topics/settings.rst
index bbe822046..3a2876a7a 100644
--- a/docs/topics/settings.rst
+++ b/docs/topics/settings.rst
@@ -749,9 +749,10 @@ REACTOR_THREADPOOL_MAXSIZE
 
 Default: ``10``
 
-The maximum limit for Twisted Reactor thread pool size. This is common multi-purpose thread pool used by various
-Scrapy components. Threaded DNS Resolver, BlockingFeedStorage, S3FilesStore just to name a few. Increase this value if
-you're experiencing problems with insufficient blocking IO.
+The maximum limit for Twisted Reactor thread pool size. This is common
+multi-purpose thread pool used by various Scrapy components. Threaded
+DNS Resolver, BlockingFeedStorage, S3FilesStore just to name a few. Increase
+this value if you're experiencing problems with insufficient blocking IO.
 
 .. setting:: REDIRECT_MAX_TIMES