diff --git a/argocd/apps/openproject/values-openproject.yaml b/argocd/apps/openproject/values-openproject.yaml
index cd09f7a..8a7122c 100644
--- a/argocd/apps/openproject/values-openproject.yaml
+++ b/argocd/apps/openproject/values-openproject.yaml
@@ -43,7 +43,7 @@ spec:
         #
         persistence:
           enabled: true
-          accessMode: 
+          accessModes: 
             - "ReadWriteOnce"
         s3:
           enabled: false