diff --git a/trunk/c5/camellia.h b/trunk/c5/camellia.h
index 02a18783..3e44efa0 100644
--- a/trunk/c5/camellia.h
+++ b/trunk/c5/camellia.h
@@ -27,6 +27,7 @@ class Camellia : public Camellia_Info, public BlockCipherDocumentation
 	public:
 		void UncheckedSetKey(CipherDir dir, const byte *key, unsigned int keylen);
 		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+		unsigned int BlockAlignment() const {return 8;}
 
 	protected:
 		static word64 F(word64 X);