diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 8521207de229..b3a2a0e1ef9b 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1279,8 +1279,7 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat,
 
 static int fat_read_root(struct inode *inode)
 {
-	struct super_block *sb = inode->i_sb;
-	struct msdos_sb_info *sbi = MSDOS_SB(sb);
+	struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
 	int error;
 
 	MSDOS_I(inode)->i_pos = MSDOS_ROOT_INO;