diff --git a/k8s/apps/firefly-iii/external-secrets.yaml b/k8s/apps/firefly-iii/external-secrets.yaml
index 7a366c8..cbef4a8 100644
--- a/k8s/apps/firefly-iii/external-secrets.yaml
+++ b/k8s/apps/firefly-iii/external-secrets.yaml
@@ -63,7 +63,9 @@ spec:
         ENABLE_BANKING_APP_ID: |-
           {{ .app_id }}
         ENABLE_BANKING_PRIVATE_KEY: |-
-          {{ .private_key }}
+          -----BEGIN PRIVATE KEY-----
+          {{ .private_key | replace "-----BEGIN PRIVATE KEY-----" "" | replace "-----END PRIVATE KEY-----" "" | replace " " "" | trim }}
+          -----END PRIVATE KEY-----
   data:
     - secretKey: app_id
       sourceRef: