diff --git a/lib/net/ldap.rb b/lib/net/ldap.rb
index 1eaa8a4..af9ac98 100644
--- a/lib/net/ldap.rb
+++ b/lib/net/ldap.rb
@@ -278,6 +278,7 @@ module Net
         },
         :constructed => {
           0 => :array,              # RFC-2251 Control
+          3 => :array,              # Seach referral
         }
       }
     }