@@ -70,10 +70,11 @@
 } of_asn1_tag_number_t;
 
 /*!
  * @brief A class representing an ASN.1 value.
  */
+OF_SUBCLASSING_RESTRICTED
 @interface OFASN1Value: OFObject
 {
 	of_asn1_tag_class_t _tagClass;
 	of_asn1_tag_number_t _tagNumber;
 	bool _constructed;