diff --git a/fs/udf/super.c b/fs/udf/super.c
index 5a21d352ea4b..31d1c583b2a7 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -2520,10 +2520,9 @@ static unsigned int udf_count_free(struct super_block *sb)
                struct logicalVolIntegrityDesc *lvid =
                        (struct logicalVolIntegrityDesc *)
                        sbi->s_lvid_bh->b_data;
                if (le32_to_cpu(lvid->numOfPartitions) > part) {
                        accum = le32_to_cpu(
-                                       lvid->freeSpaceTable[part]);
+                                       lvid->freeSpaceTable[part - 1]);
                        if (accum == 0xFFFFFFFF)
                                accum = 0;
                }