diff --git a/docs/topics/leaks.rst b/docs/topics/leaks.rst
index 21cfcf9bc..9d15ebe48 100644
--- a/docs/topics/leaks.rst
+++ b/docs/topics/leaks.rst
@@ -101,7 +101,7 @@ Let's see a concrete example of an hypothetical case of memory leaks.
 Suppose we have some spider with a line similar to this one::
 
     return Request("http://www.somenastyspider.com/product.php?pid=%d" % product_id,
-        callback=self.parse, meta={referer: response}")
+        callback=self.parse, meta={referer: response})
 
 That line is passing a response reference inside a request which effectively
 ties the response lifetime to the requests' one, and that would definitely