diff --git a/servers/slapd/saslauthz.c b/servers/slapd/saslauthz.c
index 7d14f0db29..2ded07ed2b 100644
--- a/servers/slapd/saslauthz.c
+++ b/servers/slapd/saslauthz.c
@@ -858,7 +858,7 @@ done:
 
 	if ( lud_dn ) {
 		if ( ludp->lud_dn != lud_dn ) {
-			ch_free( ludp->lud_dn );
+			slap_sl_free( ludp->lud_dn, ctx );
 		}
 		ludp->lud_dn = lud_dn;
 	}