diff --git a/node_modules/@sorunome/matrix-bot-sdk/lib/appservice/Appservice.js b/node_modules/@sorunome/matrix-bot-sdk/lib/appservice/Appservice.js
index f8c7d70..8c8c3b6 100644
--- a/node_modules/@sorunome/matrix-bot-sdk/lib/appservice/Appservice.js
+++ b/node_modules/@sorunome/matrix-bot-sdk/lib/appservice/Appservice.js
@@ -397,8 +397,8 @@ class Appservice extends events_1.EventEmitter {
     }
     isAuthed(req) {
         let providedToken = req.query ? req.query["access_token"] : null;
-        if (req.headers && req.headers["Authorization"]) {
-            const authHeader = req.headers["Authorization"];
+        if (req.headers && req.headers["authorization"]) {
+            const authHeader = req.headers["authorization"];
             if (!authHeader.startsWith("Bearer "))
                 providedToken = null;
             else