@@ -168,12 +168,11 @@
 	if (length == 0)
 		return;
 
 	if (_calculated)
 		@throw [OFHashAlreadyCalculatedException
-		    exceptionWithClass: [self class]
-				  hash: self];
+		    exceptionWithHash: self];
 
 	/* Update bitcount */
 	t = _bits[0];
 	if ((_bits[0] = t + ((uint32_t)length << 3)) < t)
 		/* Carry from low to high */