diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 3b523a5..36f3305 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -612,8 +612,8 @@
   fs_type = None
   limit = None
   if info_dict["fstab"]:
-    if mount_point == "/userdata":
-      mount_point = "/data"
+    if mount_point == "/userdata_extra": mount_point = "/data"
+    if mount_point == "/userdata": mount_point = "/data"
     p = info_dict["fstab"][mount_point]
     fs_type = p.fs_type
     device = p.device