diff --git a/charts/nim/templates/nimservice.yaml b/charts/nim/templates/nimservice.yaml
index f3586a8..f29853f 100644
--- a/charts/nim/templates/nimservice.yaml
+++ b/charts/nim/templates/nimservice.yaml
@@ -9,7 +9,7 @@ spec:
     {{- toYaml .Values.nimService.labels | nindent 4 }}
   image:
     repository: {{ .Values.image.repository }}
-    tag: {{ .Values.image.tag | default .Chart.AppVersion }}
+    tag: {{ .Values.image.tag | quote }}
     pullPolicy: {{ .Values.image.pullPolicy }}
     pullSecrets:
       {{- range .Values.imagePullSecrets }}