diff --git a/servers/slapd/schemaparse.c b/servers/slapd/schemaparse.c
index b6ffcc5fd6b3d1f11f8bd77d6a790e9eb7a6a5fd..ce2d4ce7eae6270eb65d5067192607e96969100b 100644
--- a/servers/slapd/schemaparse.c
+++ b/servers/slapd/schemaparse.c
@@ -50,6 +50,8 @@ static char *const err2text[] = {
 	"Syntax not found",
 	"Duplicate ldapSyntax",
 	"Superior syntax not found",
+	"Substitute syntax not specified",
+	"Substitute syntax not found",
 	"OID or name required",
 	"Qualifier not supported",
 	"Invalid NAME",