diff --git a/templates/deployment.yaml b/templates/deployment.yaml
index 7e91d69..22e132e 100644
--- a/templates/deployment.yaml
+++ b/templates/deployment.yaml
@@ -41,6 +41,9 @@ spec:
             - name: fhemweb
               containerPort: {{ .Values.containerPorts.fhemweb }}
               protocol: TCP
+            - name: telnet
+              containerPort: {{ .Values.telnetport }}
+              protocol: TCP
           livenessProbe:
             httpGet:
               path: /fhem