diff --git a/docs/jitsi.md b/docs/jitsi.md
index 33156b31f8..69fbc405c7 100644
--- a/docs/jitsi.md
+++ b/docs/jitsi.md
@@ -30,7 +30,7 @@ to your [config](./config.md) the following:
 ```json
 {
     "jitsi": {
-        "preferredDomain": "your.jitsi.example.org"
+        "preferred_domain": "your.jitsi.example.org"
     }
 }
 ```