@@ -26,10 +26,11 @@
 #import "OFOutOfRangeException.h"
 
 #define DIGEST_SIZE 16
 #define BLOCK_SIZE 64
 
+OF_DIRECT_MEMBERS
 @interface OFMD5Hash ()
 - (void)of_resetState;
 @end
 
 #define F(a, b, c) (((a) & (b)) | (~(a) & (c)))