diff --git a/README.md b/README.md
index fdc07a8..606404d 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ sequenceDiagram
     MailServer->>RulesEngine: Inbound Email
     RulesEngine->>CaseMgt: CreateCaseFromEmail(SmartRule)
     CaseMgt->>+IVA: Email NotificationWebHook
-    IVA->>CaseMgt: Acknowledge
+    IVA->>CaseMgt: caseAction(Acknowledge)
     IVA->>CaseMgt: getCase(caseId)
     IVA-->>IVA: Model Inference using Body
     IVA->>CustomerProfile: search(emailAddress)