@@ -209,15 +209,15 @@
 	(val) >> (sizeof(val) * 8 - ((bits) % (sizeof(val) * 8))))
 
 #define OF_HASH_INIT(hash) hash = 0
 #define OF_HASH_ADD(hash, byte)		\
 	{				\
-		hash += byte;		\
+		hash += (uint8_t)byte;	\
 		hash += (hash << 10);	\
 		hash ^= (hash >> 6);	\
 	}
 #define OF_HASH_FINALIZE(hash)		\
 	{				\
 		hash += (hash << 3);	\
 		hash ^= (hash >> 11);	\
 		hash += (hash << 15);	\
 	}