diff --git a/walkthrough/v1beta3/replication-controller.yaml b/walkthrough/v1beta3/replication-controller.yaml
index b979a075..826b945c 100644
--- a/walkthrough/v1beta3/replication-controller.yaml
+++ b/walkthrough/v1beta3/replication-controller.yaml
@@ -20,5 +20,5 @@ spec:
       containers:
         - name: nginx
           image: nginx
-            ports:
+          ports:
             - containerPort: 80