diff --git a/helm-toolkit/templates/utils/_joinListWithComma.tpl b/helm-toolkit/templates/utils/_joinListWithComma.tpl
index 2a7c691ca6..371a795ccd 100644
--- a/helm-toolkit/templates/utils/_joinListWithComma.tpl
+++ b/helm-toolkit/templates/utils/_joinListWithComma.tpl
@@ -13,5 +13,6 @@
 # limitations under the License.
 
 {{- define "helm-toolkit.utils.joinListWithComma" -}}
-{{ range $k, $v := . }}{{ if $k }},{{ end }}{{ $v }}{{ end }}
+{{- $local := dict "first" true -}}
+{{- range $k, $v := . -}}{{- if not $local.first -}},{{- end -}}{{- $v -}}{{- $_ := set $local "first" false -}}{{- end -}}
 {{- end -}}