diff --git a/classes/MD_STD b/classes/MD_STD
index 0bfd6c3..087b4a1 160000
--- a/classes/MD_STD
+++ b/classes/MD_STD
@@ -1 +1 @@
-Subproject commit 0bfd6c3765fccf9be52b20fa95d9fd70b52aa729
+Subproject commit 087b4a128ed3b60dbec0f6008896c0ccefc3b942