diff --git a/packages/pdfjs-viewer/src/custom.ts b/packages/pdfjs-viewer/src/custom.ts
index 1344a68897..4bfa955d70 100644
--- a/packages/pdfjs-viewer/src/custom.ts
+++ b/packages/pdfjs-viewer/src/custom.ts
@@ -49,7 +49,7 @@ function configurePdfViewerOptions() {
         }
     };
     if (window.parent && window.parent !== window) {
-        window.parent.addEventListener("webviewerloaded", pdfOptionsHandler);
+        window.parent.addEventListener("webviewerloaded", pdfOptionsHandler, { once: true });
         window.addEventListener("pagehide", () => window.parent.removeEventListener("webviewerloaded", pdfOptionsHandler));
     }
 }