@@ -26,10 +26,11 @@
 /*!
  * @class OFINICategory OFINICategory.h ObjFW/OFINICategory.h
  *
  * @brief A class for representing a category of an INI file.
  */
+OF_SUBCLASSING_RESTRICTED
 @interface OFINICategory: OFObject
 {
 	OFString *_name;
 	OFMutableArray *_lines;
 }