diff --git a/deploy/charts/emqx/templates/configmap.env.yaml b/deploy/charts/emqx/templates/configmap.env.yaml
index 851a7496b..ff5924c54 100644
--- a/deploy/charts/emqx/templates/configmap.env.yaml
+++ b/deploy/charts/emqx/templates/configmap.env.yaml
@@ -11,7 +11,7 @@ metadata:
     app.kubernetes.io/managed-by: {{ .Release.Service }}
 data:
   {{- range $index, $value := .Values.emqxConfig }}
-  {{- if ne $value nil }}
+  {{- if $value }}
   {{- $key := (regexReplaceAllLiteral "\\." (regexReplaceAllLiteral "EMQX[_\\.]" (upper (trimAll " " $index)) "") "__") }}
   {{ print "EMQX_" $key }}: {{ $value | quote }}
   {{- end }}