diff --git a/storage/local.py b/storage/local.py
index f3dcdede1..fc2b79563 100644
--- a/storage/local.py
+++ b/storage/local.py
@@ -157,8 +157,7 @@ class LocalStorage(BaseStorageV2):
     # Verify that the storage's root path is under a mounted Docker volume.
     for mount in mounts:
       if mount.mountpoint != '/' and self._root_path.startswith(mount.mountpoint):
-        if mount.device == 'tmpfs':
-          return
+        return
 
     raise Exception('Storage path %s is not under a mounted volume.\n\n'
                     'Registry data must be stored under a mounted volume '