diff --git a/charts/incubator/mosquitto/templates/configmap.yaml b/charts/incubator/mosquitto/templates/configmap.yaml
index fb79f2269f2..489d68b0ea5 100644
--- a/charts/incubator/mosquitto/templates/configmap.yaml
+++ b/charts/incubator/mosquitto/templates/configmap.yaml
@@ -6,7 +6,7 @@ metadata:
     {{- include "common.labels" . | nindent 4 }}
 data:
   mosquitto.conf: |
-    listener {{ .Values.service.main.ports.mqtt.port }}
+    listener {{ .Values.service.main.ports.main.port }}
     {{- if .Values.auth.enabled }}
     allow_anonymous false
     {{- else }}