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-rw-r--r--btrfs-calc-size.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/btrfs-calc-size.c b/btrfs-calc-size.c
index a832ee0b..5eabdfc2 100644
--- a/btrfs-calc-size.c
+++ b/btrfs-calc-size.c
@@ -326,7 +326,7 @@ static int calc_root_size(struct btrfs_root *tree_root, struct btrfs_key *key,
int size_fail = 0;
root = btrfs_read_fs_root(tree_root->fs_info, key);
- if (!root) {
+ if (IS_ERR(root)) {
fprintf(stderr, "Failed to read root %Lu\n", key->objectid);
return 1;
}