diff --git a/Ch03.md b/Ch03.md
index 0ed89ad..edbcd6b 100644
--- a/Ch03.md
+++ b/Ch03.md
@@ -46,7 +46,7 @@ Installing a Pod Network may be the next step, there are several to choose:
 
 **CNI**: Container Network Interface, which is a CNCF project. Several containers runtime use CNI.
 
-The selection of the Pod Network for **CNI** depends of the expected demand on the cluster. There can be only one Pod Network per cluster (**CNI-Genie** is working on change this). The network must allow container-to-container, pod-to-pod, pod-to-service, and external-to-service communications. Docker use host-private networking, so using <u>docker0</u> and <u>veth</u> requires to be on that host to communicate.
+The selection of the Pod Network for **CNI** depends of the expected demand on the cluster. <u>There can be only one Pod Network per cluster</u> (**CNI-Genie** is working on change this). The network must allow container-to-container, pod-to-pod, pod-to-service, and external-to-service communications. Docker use host-private networking, so using <u>docker0</u> and <u>veth</u> requires to be on that host to communicate.
 
 Other tools to install Kubernetes: