diff --git a/src/core.h b/src/core.h
index 67c9af7..a8d8736 100644
--- a/src/core.h
+++ b/src/core.h
@@ -49,7 +49,7 @@ struct tip_client {
 	const char		*uri;
 	const char		*path;
 	bool			checksum;
-	uint32_t		chunk;
+	int32_t			chunk;
 	off_t			size;
 	off_t			left;
 	int			fd;