diff --git a/docs/features/canary/index.md b/docs/features/canary/index.md
index 0a752eee7d..d1b3dc0c9f 100644
--- a/docs/features/canary/index.md
+++ b/docs/features/canary/index.md
@@ -33,7 +33,7 @@ spec:
         - name: nginx
           image: nginx:1.15.4
           ports:
-            - containerPort: 80
+            - containerPort: 80$$
               protocol: TCP
   minReadySeconds: 30
   revisionHistoryLimit: 3