diff --git a/pentadactyl/content/config.js b/pentadactyl/content/config.js
index 507741d8..00e65748 100644
--- a/pentadactyl/content/config.js
+++ b/pentadactyl/content/config.js
@@ -76,7 +76,7 @@ const Config = Module("config", ConfigBase, {
         preferences: ["Show Firefox preferences dialog",
             function () { window.openPreferences(); }],
         printpreview: ["Preview the page before printing",
-            function () { PrintUtils.printPreview(onEnterPrintPreview, onExitPrintPreview); }],
+            function () { PrintUtils.printPreview(window.PrintPreviewListener || onEnterPrintPreview, window.onExitPrintPreview); }],
         printsetup: ["Setup the page size and orientation before printing",
             function () { PrintUtils.showPageSetup(); }],
         print: ["Show print dialog",