diff --git a/servers/slapd/schema/core.schema b/servers/slapd/schema/core.schema
index f8671b2d6f..1bb4cc9567 100644
--- a/servers/slapd/schema/core.schema
+++ b/servers/slapd/schema/core.schema
@@ -347,6 +347,12 @@ attributetype ( 2.5.4.65 NAME 'pseudonym'
 
 # Standard object classes from RFC2256
 
+# system schema
+#objectclass ( 2.5.6.0 NAME 'top'
+#	DESC 'RFC2256: top of the superclass chain'
+#	ABSTRACT
+#	MUST objectClass )
+
 # system schema
 #objectclass ( 2.5.6.1 NAME 'alias'
 #	DESC 'RFC2256: an alias'