diff --git a/COMPAT.md b/COMPAT.md
index f6cb01691..967f566b4 100644
--- a/COMPAT.md
+++ b/COMPAT.md
@@ -486,7 +486,7 @@ Modifiers:
 | Lt             | Yes    |         |
 | MakeRecord     | Yes    |         |
 | MaxPgcnt       | Yes    |         |
-| MemMax         | No     |         |
+| MemMax         | Yes     |         |
 | Move           | Yes    |         |
 | Multiply       | Yes    |         |
 | MustBeInt      | Yes    |         |