diff --git a/SDT/schema4.0/docs/SDT_UML.uxf b/SDT/schema4.0/docs/SDT_UML.uxf
index 5ffd33192c71dc72943b13436b57ac89ccecbaf8..673555a3146b8816737827387fa21c03f841977e 100644
--- a/SDT/schema4.0/docs/SDT_UML.uxf
+++ b/SDT/schema4.0/docs/SDT_UML.uxf
@@ -851,7 +851,7 @@ m1=0..1</panel_attributes>
     <panel_attributes>Extend
 --
 *@domain : IDRF*
-*@class : ID*
+*@entity : ID*
 /- Excludes : Exclude/
 
 fg=blue</panel_attributes>
diff --git a/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png b/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png
index 922dcba5dd0d740518df3953b6852e34492f2cf7..32f4786fa5b96ee820ede315d800f66dc61e0599 100644
Binary files a/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png and b/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png differ