diff --git a/packages/pdfjs-viewer/src/custom.ts b/packages/pdfjs-viewer/src/custom.ts
index 39f588119..da1fb6850 100644
--- a/packages/pdfjs-viewer/src/custom.ts
+++ b/packages/pdfjs-viewer/src/custom.ts
@@ -9,9 +9,6 @@ async function main() {
     }
     const app = window.PDFViewerApplication;
 
-    if (LOG_EVENT_BUS) {
-        patchEventBus();
-    }
     app.eventBus.on("documentloaded", () => {
         manageSave();
     });