diff --git a/samples/flushfs/flush_fs.go b/samples/flushfs/flush_fs.go
index 7d89734..6bc61c2 100644
--- a/samples/flushfs/flush_fs.go
+++ b/samples/flushfs/flush_fs.go
@@ -68,6 +68,7 @@ func (fs *flushFS) fooAttributes() fuse.InodeAttributes {
 	return fuse.InodeAttributes{
 		Nlink: 1,
 		Mode:  0777,
+		Size:  uint64(len(fs.fooContents)),
 	}
 }