diff --git a/web/app.js b/web/app.js
index 1cb736937..028f0b146 100644
--- a/web/app.js
+++ b/web/app.js
@@ -2007,6 +2007,8 @@ const PDFViewerApplication = {
       eventBus._on("openfile", webViewerOpenFile);
     }
     if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
+      // The `unbindEvents` method is unused in MOZCENTRAL builds,
+      // hence we don't need to unregister these event listeners.
       eventBus._on(
         "annotationeditorstateschanged",
         webViewerAnnotationEditorStatesChanged
@@ -2140,9 +2142,6 @@ const PDFViewerApplication = {
       eventBus._off("fileinputchange", webViewerFileInputChange);
       eventBus._off("openfile", webViewerOpenFile);
     }
-    if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
-      eventBus._off("reporttelemetry", webViewerReportTelemetry);
-    }
 
     _boundEvents.beforePrint = null;
     _boundEvents.afterPrint = null;