diff --git a/chat.html b/chat.html
index e87a61f..3e4120e 100644
--- a/chat.html
+++ b/chat.html
@@ -257,8 +257,8 @@
                 timestamp = is_true(url.searchParams.get("timestamp"));
             }
 
-            if (url.searchParams.get("timestamp-locale") !== null) {
-                timestamp_locale = url.searchParams.get("timestamp-locale");
+            if (url.searchParams.get("timestamp_locale") !== null) {
+                timestamp_locale = url.searchParams.get("timestamp_locale");
             }
             
             return {