diff --git a/fs/btrfs/tests/free-space-tests.c b/fs/btrfs/tests/free-space-tests.c
index c8c3d70c31ffad4e02acd04e0f7dcaa54ad0fe2b..8b72b005bfb9a212518a711a2e476c2d70b47b24 100644
--- a/fs/btrfs/tests/free-space-tests.c
+++ b/fs/btrfs/tests/free-space-tests.c
@@ -898,8 +898,10 @@ int btrfs_test_free_space_cache(void)
 	}
 
 	root = btrfs_alloc_dummy_root();
-	if (!root)
+	if (IS_ERR(root)) {
+		ret = PTR_ERR(root);
 		goto out;
+	}
 
 	root->fs_info = btrfs_alloc_dummy_fs_info();
 	if (!root->fs_info)