opendj3/opendj-ldap-sdk/src/main/java/org/forgerock/opendj/ldap/schema/SchemaBuilder.java
@@ -2233,6 +2233,11 @@ throws ConflictingSchemaElementException, NullPointerException { Validator.ensureNotNull(schema); // All of the schema elements must be duplicated because validation will // cause them to update all their internal references which, although // unlikely, may be different in the new schema. for (final Syntax syntax : schema.getSyntaxes()) { addSyntax(syntax.duplicate(), overwrite);