diff --git a/charts/service/templates/cronjob.yaml b/charts/service/templates/cronjob.yaml
index ff6f412..9d44824 100644
--- a/charts/service/templates/cronjob.yaml
+++ b/charts/service/templates/cronjob.yaml
@@ -29,7 +29,7 @@ spec:
         spec:
           serviceAccountName: {{ $serviceAccountName }}
           containers:
-          - image: "{{ .image.repository | $image }}:{{ .image.tag | $tag }}"
+          - image: "{{ .image.repository | default $image }}:{{ .image.tag | default $tag }}"
             imagePullPolicy: {{ $imagePullPolicy }}
             name: {{ .name }}
             env: