diff --git a/code/boot.js b/code/boot.js
index 238bdd6b..c38462e6 100644
--- a/code/boot.js
+++ b/code/boot.js
@@ -387,7 +387,6 @@ function boot() {
   window.setupQRLoadLib();
   window.setupLayerChooserSelectOne();
   window.setupLayerChooserStatusRecorder();
-  window.setupBackButton();
   // read here ONCE, so the URL is only evaluated one time after the
   // necessary data has been loaded.
   urlPortalLL = getURLParam('pll');