diff --git a/js/trserver.js b/js/trserver.js
index 494238e..8e83732 100644
--- a/js/trserver.js
+++ b/js/trserver.js
@@ -37,7 +37,7 @@ class trserver extends EventTarget {
     removeServerListButton(name) {
         if (this.#elements.serverlist.buttons[name] != null) {
             this.#elements.serverlist.row.removeChild(this.#elements.serverlist.buttons[name]);
-            this.#elements.serverlist.buttons[name] = null;
+            delete this.#elements.serverlist.buttons[name];
         }
     }