diff --git a/docs/validate.rst b/docs/validate.rst
index 61aa5c3..6de8d80 100644
--- a/docs/validate.rst
+++ b/docs/validate.rst
@@ -184,7 +184,7 @@ need to specify all types to match if you override one of the existing JSON
 types, so you may want to access the set of default types when specifying your
 additional type.
 
-.. numbers:: http://docs.python.org/3.3/library/numbers.html
+.. _numbers: http://docs.python.org/3.3/library/numbers.html
 
 .. _versioned-validators: