@@ -19,10 +19,11 @@
 
 OF_ASSUME_NONNULL_BEGIN
 
 #define OF_LHA_DECOMPRESSING_STREAM_BUFFER_SIZE 4096
 
+OF_SUBCLASSING_RESTRICTED
 @interface OFLHADecompressingStream: OFStream
 {
 @public
 	OFStream *_stream;
 	uint8_t _distanceBits, _dictionaryBits;