diff --git a/templates/_statefulset.tpl b/templates/_statefulset.tpl
index 55bc695..1908e40 100644
--- a/templates/_statefulset.tpl
+++ b/templates/_statefulset.tpl
@@ -46,7 +46,6 @@ spec:
           {{- range $k, $v := $values.ports }}
             - name: {{ $k }}
               containerPort: {{ $v.targetPort | default $v.port }}
-              protocol: {{ default "TCP" $v.protocol }}
           {{- end -}}
           {{- end -}}
           {{- end }}