diff --git a/docs/topics/addons.rst b/docs/topics/addons.rst
index c432c64d2..36c7e0fa0 100644
--- a/docs/topics/addons.rst
+++ b/docs/topics/addons.rst
@@ -145,7 +145,7 @@ Access the crawler instance:
             self.crawler = crawler
 
         @classmethod
-        def from_crawler(cls, crawler: Crawler):
+        def from_crawler(cls, crawler):
             return cls(crawler)
 
         def update_settings(self, settings):