diff --git a/servers/slapd/schema/core.schema b/servers/slapd/schema/core.schema
index 7f8410373b..9bd1d72df1 100644
--- a/servers/slapd/schema/core.schema
+++ b/servers/slapd/schema/core.schema
@@ -570,7 +570,7 @@ attributetype ( 0.9.2342.19200300.100.1.37
 	SUBSTR caseIgnoreIA5SubstringsMatch
 	SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
 
-# RFC 2459
+# RFC 2459 -- deprecated in favor of 'mail' (in cosine.schema)
 attributetype ( 1.2.840.113549.1.9.1
 	NAME ( 'email' 'emailAddress' 'pkcs9email' )
 	DESC 'RFC2459: legacy attribute for email addresses in DNs'