diff --git a/Use_Case_Diagram.md b/Use_Case_Diagram.md
index 3693cb3..db95a66 100644
--- a/Use_Case_Diagram.md
+++ b/Use_Case_Diagram.md
@@ -28,6 +28,6 @@ u --> UC4
 u --> UC5
 u --> UC6
   UC6_1 .> UC6 : extend
-  UC6 .> UC6_2 : include
+  UC6_1 .> UC6_2 : include
 
 @enduml
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