diff --git a/core/servers/chat/mrc_multiplexer.js b/core/servers/chat/mrc_multiplexer.js
index d11488d15..bcbc52ef5 100644
--- a/core/servers/chat/mrc_multiplexer.js
+++ b/core/servers/chat/mrc_multiplexer.js
@@ -337,8 +337,7 @@ exports.getModule = class MrcModule extends ServerModule {
 
         // Make sure to_user is always uppercase
         try {
-            let to_user_uc = to_user.toUpperCase();
-            to_user = to_user_uc;
+            to_user = to_user.toUpperCase();
         }
         catch (e) {}