diff --git a/charts/argocd-notifications/templates/secret.yaml b/charts/argocd-notifications/templates/secret.yaml
index 9c32bd25..359fcc7f 100644
--- a/charts/argocd-notifications/templates/secret.yaml
+++ b/charts/argocd-notifications/templates/secret.yaml
@@ -12,7 +12,7 @@ stringData:
     slack:
       token: {{ .Values.secret.notifiers.slack.token }}
       username: {{ .Values.secret.notifiers.slack.username }}
-      icon: "{{ .Values.secret.notifiers.slack.icon }}"
+      icon: {{ .Values.secret.notifiers.slack.icon | quote }}
       signingSecret: {{ .Values.secret.notifiers.slack.signingSecret }}
 {{- end }}
 {{- if .Values.secret.notifiers.grafana.enabled }}