diff --git a/docs/index.rst b/docs/index.rst
index ea4950e4c..5404969e0 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -258,7 +258,7 @@ Extending Scrapy
     components.
 
 :doc:`topics/api`
-    Use it on extensions and middlewares to extend Scrapy functionality
+    Use it on extensions and middlewares to extend Scrapy functionality.
 
 
 All the rest