diff --git a/xxl-job-admin/templates/deployment.yaml b/xxl-job-admin/templates/deployment.yaml
index c57896b..ca1e559 100644
--- a/xxl-job-admin/templates/deployment.yaml
+++ b/xxl-job-admin/templates/deployment.yaml
@@ -44,7 +44,7 @@ spec:
             - containerPort: 8080
           env:
             - name: PARAMS
-              value: {{ .Values.PARAMS_VALUE | "--spring.datasource.url=jdbc:mysql://mysql:3306/xxl_job?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&serverTimezone=Asia/Shanghai --spring.datasource.username=root --spring.datasource.password=mysql" }}
+              value: {{ .Values.PARAMS_VALUE | default "--spring.datasource.url=jdbc:mysql://mysql:3306/xxl_job?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&serverTimezone=Asia/Shanghai --spring.datasource.username=root --spring.datasource.password=mysql" }}
           {{- if not .Values.healthChk.enabled }}
           {{- with .Values.healthChk.content }}
           {{- toYaml . | nindent 10 }}