@@ -20,14 +20,14 @@
 /**
  * @class OFXMLCDATA OFXMLCDATA.h ObjFW/OFXMLCDATA.h
  *
  * @brief A class representing XML CDATA.
  */
+OF_SUBCLASSING_RESTRICTED
 @interface OFXMLCDATA: OFXMLNode
 {
 	OFString *_CDATA;
-	OF_RESERVE_IVARS(OFXMLCDATA, 4)
 }
 
 /**
  * @brief Creates a new OFXMLCDATA with the specified string.
  *