@@ -44,11 +44,11 @@
 			     writable: (bool)writable
 {
 	self = [super init];
 
 	@try {
-		if (size > SSIZE_MAX || (ssize_t)size != (OFFileOffset)size)
+		if (size > SSIZE_MAX || (ssize_t)size != (OFStreamOffset)size)
 			@throw [OFOutOfRangeException exception];
 
 		_address = address;
 		_size = size;
 		_writable = writable;
@@ -99,32 +99,33 @@
 - (bool)lowlevelIsAtEndOfStream
 {
 	return (_position == _size);
 }
 
-- (OFFileOffset)lowlevelSeekToOffset: (OFFileOffset)offset whence: (int)whence
+- (OFStreamOffset)lowlevelSeekToOffset: (OFStreamOffset)offset
+				whence: (int)whence
 {
-	OFFileOffset new;
+	OFStreamOffset new;
 
 	switch (whence) {
 	case SEEK_SET:
 		new = offset;
 		break;
 	case SEEK_CUR:
-		new = (OFFileOffset)_position + offset;
+		new = (OFStreamOffset)_position + offset;
 		break;
 	case SEEK_END:
-		new = (OFFileOffset)_size + offset;
+		new = (OFStreamOffset)_size + offset;
 		break;
 	default:
 		@throw [OFInvalidArgumentException exception];
 	}
 
-	if (new < 0 || new > (OFFileOffset)_size)
+	if (new < 0 || new > (OFStreamOffset)_size)
 		@throw [OFSeekFailedException exceptionWithStream: self
 							   offset: offset
 							   whence: whence
 							    errNo: EINVAL];
 
 	return (_position = (size_t)new);
 }
 @end