diff --git a/web/pdf_viewer.js b/web/pdf_viewer.js
index 46ee55d99..1d70f6e5f 100644
--- a/web/pdf_viewer.js
+++ b/web/pdf_viewer.js
@@ -323,7 +323,6 @@ var PDFViewer = (function pdfViewer() {
           // rendering.
           self._buffer.push(this);
         };
-        // when page is painted, using the image as thumbnail base
         pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
           if (!isOnePageRenderedResolved) {
             isOnePageRenderedResolved = true;