diff --git a/_layouts/viewer.html b/_layouts/viewer.html
index 2d185d246..21432f723 100644
--- a/_layouts/viewer.html
+++ b/_layouts/viewer.html
@@ -52,7 +52,7 @@
                 if (i < 0) i = pdf.indexOf(' ');
                 if (i > 0) pdf = pdf.substr(0, i);
                 var setPage = function(page) {
-                    frame.setAttribute('src', 'http://archive.pcjs.org' + pdf + ' ' + curPage + '.pdf');
+                    frame.setAttribute('src', 'https://s3-us-west-2.amazonaws.com/archive.pcjs.org' + pdf + ' ' + curPage + '.pdf');
                 };
                 setPage(curPage);
                 var buttonPrev = document.getElementById('prevPDF');