diff --git a/HowtoKVM.md b/HowtoKVM.md
index 9791dfe0..6e8dbb37 100644
--- a/HowtoKVM.md
+++ b/HowtoKVM.md
@@ -163,8 +163,7 @@ iface eth0 inet manual
 
 auto br0
 iface br0 inet static
-   address <address>
-   netmask <netmask>
+   address <address>/<netmask>
    gateway <gateway>
    bridge_ports eth0
    up echo 0 > /sys/class/net/br0/bridge/multicast_snooping
@@ -665,8 +664,7 @@ iface br0 inet manual
     up echo 0 > /sys/class/net/br0/bridge/multicast_snooping
 auto br0.42
 iface br0.42 inet static
-   address <address>
-   netmask <netmask>
+   address <address>/netmask>
    gateway <gateway>
 ~~~