diff --git a/guides/source/active_record_postgresql.md b/guides/source/active_record_postgresql.md
index 54f6be006eadfa240e304aba802b3f62406c8a71..041fdacbabe5a7fcb70564d71270d662fba758a9 100644
--- a/guides/source/active_record_postgresql.md
+++ b/guides/source/active_record_postgresql.md
@@ -285,7 +285,7 @@ SELECT n.nspname AS enum_schema,
 ### UUID
 
 * [type definition](http://www.postgresql.org/docs/current/static/datatype-uuid.html)
-* [pgcrypto generator function](http://www.postgresql.org/docs/current/static/pgcrypto.html#AEN159361)
+* [pgcrypto generator function](http://www.postgresql.org/docs/current/static/pgcrypto.html#AEN182570)
 * [uuid-ossp generator functions](http://www.postgresql.org/docs/current/static/uuid-ossp.html)
 
 NOTE: You need to enable the `pgcrypto` (only PostgreSQL >= 9.4) or `uuid-ossp`