diff --git a/SUMMARY.md b/SUMMARY.md
index ee4321b..3ec0a0c 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -190,6 +190,6 @@
 
 * [Introduction](nats-kubernetes/README.md)
 * [NATS Streaming Cluster with FT Mode](nats-kubernetes/stan-ft-k8s-aws.md)
-* [NATS + Prometheus Operator](nats-kubernetes/prometheus-and-nats-operator)
+* [NATS + Prometheus Operator](nats-kubernetes/prometheus-and-nats-operator.md)
 * [NATS + Cert Manager](nats-kubernetes/nats-cluster-and-cert-manager.md)
 * [Securing a NATS Cluster with cfssl](nats-kubernetes/operator-tls-setup-with-cfssl.md)