diff --git a/nat/README.md b/nat/README.md
index 114e0199..0d0a2b71 100644
--- a/nat/README.md
+++ b/nat/README.md
@@ -59,6 +59,6 @@ After activating the application you need to configure functional ports that it
       }
     }
     ```
-WAN:0 is the private port of the NAT, while USER:1 is the public one.
+WAN:0 is the private port of the NAT, while USER:0 is the public one.
 
 After pushing the configuration, you can check the log by typing log:tail on the onos cli.