diff --git a/src/radius/handler/eap/eapMethods/EAP-TTLS.ts b/src/radius/handler/eap/eapMethods/EAP-TTLS.ts
index d193cb3..d53e11b 100644
--- a/src/radius/handler/eap/eapMethods/EAP-TTLS.ts
+++ b/src/radius/handler/eap/eapMethods/EAP-TTLS.ts
@@ -413,6 +413,8 @@ export class EAPTTLS implements IEAPMethod {
 			return {
 				code: PacketResponseCode.AccessReject,
 			};
+		} finally {
+			this.lastProcessedIdentifier.set(stateID, undefined);
 		}
 	}