diff --git a/docs/concepts/services-networking/network-policies.md b/docs/concepts/services-networking/network-policies.md
index ea235dd828..b57c04a7d0 100644
--- a/docs/concepts/services-networking/network-policies.md
+++ b/docs/concepts/services-networking/network-policies.md
@@ -51,7 +51,7 @@ spec:
         matchLabels:
           role: frontend
     ports:
-    - protocol: tcp
+    - protocol: TCP
       port: 6379
 ```