diff --git a/docs/concepts/workloads/controllers/statefulset.md b/docs/concepts/workloads/controllers/statefulset.md
index fe97e79f8e3..a19691ce590 100644
--- a/docs/concepts/workloads/controllers/statefulset.md
+++ b/docs/concepts/workloads/controllers/statefulset.md
@@ -99,7 +99,7 @@ spec:
       name: www
     spec:
       accessModes: [ "ReadWriteOnce" ]
-      storageClassName: my-storage-class
+      storageClassName: "my-storage-class"
       resources:
         requests:
           storage: 1Gi