diff --git a/scrapy/crawler.py b/scrapy/crawler.py
index 15aec2757..6f54e62e9 100644
--- a/scrapy/crawler.py
+++ b/scrapy/crawler.py
@@ -404,8 +404,8 @@ class CrawlerProcess(CrawlerRunner):
         :param bool stop_after_crawl: stop or not the reactor when all
             crawlers have finished
 
-        :param bool install_signal_handlers: whether to install the shutdown
-            handlers (default: True)
+        :param bool install_signal_handlers: whether to install the OS signal
+            handlers from Twisted and Scrapy (default: True)
         """
         from twisted.internet import reactor
 
@@ -426,7 +426,7 @@ class CrawlerProcess(CrawlerRunner):
             reactor.addSystemEventTrigger(
                 "after", "startup", install_shutdown_handlers, self._signal_shutdown
             )
-        reactor.run()  # blocking call
+        reactor.run(installSignalHandlers=install_signal_handlers)  # blocking call
 
     def _graceful_stop_reactor(self) -> Deferred:
         d = self.stop()