diff --git a/docs/getting-started/troubleshooting.md b/docs/getting-started/troubleshooting.md
index 5557e4a8..3a6ac55a 100644
--- a/docs/getting-started/troubleshooting.md
+++ b/docs/getting-started/troubleshooting.md
@@ -94,7 +94,7 @@ services:
 +     NEKO_IPFETCH: https://ifconfig.co/ip
 ```
 
-Or you can specify your IP address manually using `NEKO_NAT1TO1`:
+Or you can specify your IP address manually using `NEKO_NAT1TO1`: (It's read as NAT 1 to 1, so it's capital letter 'O', not zero '0', in NAT1`TO`1)
 
 ```diff
 version: "3.4"