diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index a4dc64fb89ed..2df64712335a 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -695,7 +695,7 @@ static bool parse_ntfs_boot_sector(struct ntfs_volume *vol,
 		 * = -log2(mft_record_size) bytes. mft_record_size normaly is
 		 * 1024 bytes, which is encoded as 0xF6 (-10 in decimal).
 		 */
-		vol->mft_record_size = 1 << -clusters_per_mft_record;
+		vol->mft_record_size = 1U << -clusters_per_mft_record;
 	vol->mft_record_size_mask = vol->mft_record_size - 1;
 	vol->mft_record_size_bits = ffs(vol->mft_record_size) - 1;
 	ntfs_debug("vol->mft_record_size = %i (0x%x)", vol->mft_record_size,
@@ -732,7 +732,7 @@ static bool parse_ntfs_boot_sector(struct ntfs_volume *vol,
 		 * index_record_size normaly equals 4096 bytes, which is
 		 * encoded as 0xF4 (-12 in decimal).
 		 */
-		vol->index_record_size = 1 << -clusters_per_index_record;
+		vol->index_record_size = 1U << -clusters_per_index_record;
 	vol->index_record_size_mask = vol->index_record_size - 1;
 	vol->index_record_size_bits = ffs(vol->index_record_size) - 1;
 	ntfs_debug("vol->index_record_size = %i (0x%x)",