diff --git a/charts/monitoring-operator/templates/platform-ca-secret.yaml b/charts/monitoring-operator/templates/platform-ca-secret.yaml
index 7f08464e..b035a785 100644
--- a/charts/monitoring-operator/templates/platform-ca-secret.yaml
+++ b/charts/monitoring-operator/templates/platform-ca-secret.yaml
@@ -6,6 +6,5 @@ metadata:
   namespace: {{ .Release.Namespace }}
   labels:
     {{- include "monitoring-operator.labels" . | nindent 4 }}
-data:
-  tls.crt: {{ .Values.platform.caBundle }}
+stringData: {{ dict "tls.crt" .Values.platform.caBundle | toJson }}
 {{- end }}