diff --git a/fs/exfat/nls.c b/fs/exfat/nls.c
index 57db08a5271c..055447edcf9a 100644
--- a/fs/exfat/nls.c
+++ b/fs/exfat/nls.c
@@ -769,13 +769,18 @@ int exfat_create_upcase_table(struct super_block *sb)
 
 			tbl_clu  = le32_to_cpu(ep->dentry.upcase.start_clu);
 			tbl_size = le64_to_cpu(ep->dentry.upcase.size);
-
-			sector = exfat_cluster_to_sector(sbi, tbl_clu);
-			num_sectors = ((tbl_size - 1) >> blksize_bits) + 1;
-			ret = exfat_load_upcase_table(sb, sector, num_sectors,
-				le32_to_cpu(ep->dentry.upcase.checksum));
-
+			if (tbl_size) {
+				sector = exfat_cluster_to_sector(sbi, tbl_clu);
+				num_sectors = ((tbl_size - 1) >> blksize_bits) + 1;
+				ret = exfat_load_upcase_table(sb, sector, num_sectors,
+					le32_to_cpu(ep->dentry.upcase.checksum));
+			} else {
+				exfat_fs_error(sb,
+					       "bad upcase table size (0 bytes). Please run fsck");
+				ret = -EINVAL;
+			}
 			brelse(bh);
+
 			if (ret && ret != -EIO) {
 				/* free memory from exfat_load_upcase_table call */
 				exfat_free_upcase_table(sbi);
@@ -790,6 +795,8 @@ int exfat_create_upcase_table(struct super_block *sb)
 			return -EIO;
 	}
 
+	exfat_fs_error(sb, "no upcase table entry. Please run fsck");
+
 load_default:
 	/* load default upcase table */
 	return exfat_load_default_upcase_table(sb);