@@ -29,10 +29,11 @@
  *	 underlying stream does so, too.
  *
  * @brief A class that handles Deflate decompression transparently for an
  *	  underlying stream.
  */
+OF_SUBCLASSING_RESTRICTED
 @interface OFInflate64Stream: OFStream <OFReadyForReadingObserving>
 {
 #ifdef OF_INFLATE64_STREAM_M
 @public
 #endif