diff --git a/syncstore/driver_fs.go b/syncstore/driver_fs.go
index b88ceb2..178a967 100644
--- a/syncstore/driver_fs.go
+++ b/syncstore/driver_fs.go
@@ -45,12 +45,17 @@ func (drv *FSStore) RawSave(s *Blob) error {
 	if err != nil {
 		return err
 	}
+	tempname := f.Name()
 	_, err = f.Write(body)
+	err2 := f.Close()
 	if err != nil {
 		_ = os.Remove(f.Name())
 		return err
 	}
-	return os.Rename(f.Name(), filename)
+	if err2 != nil {
+		return err2
+	}
+	return os.Rename(tempname, filename)
 }
 
 func (drv *FSStore) RawLoad(id string) (*Blob, error) {