diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 28f78df086ef..b032bbc6855c 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1786,7 +1786,7 @@ int fat_fill_super(struct super_block *sb, struct fs_context *fc,
 	 */
 
 	error = -EINVAL;
-	sprintf(buf, "cp%d", sbi->options.codepage);
+	scnprintf(buf, sizeof(buf), "cp%d", sbi->options.codepage);
 	sbi->nls_disk = load_nls(buf);
 	if (!sbi->nls_disk) {
 		fat_msg(sb, KERN_ERR, "codepage %s not found", buf);