diff --git a/modules/luci-base/ucode/dispatcher.uc b/modules/luci-base/ucode/dispatcher.uc
index 24769f0037..39af8375ea 100644
--- a/modules/luci-base/ucode/dispatcher.uc
+++ b/modules/luci-base/ucode/dispatcher.uc
@@ -845,7 +845,7 @@ function run_action(request_path, lang, tree, resolved, action) {
 			         "Install luci-mod-admin-full and retry. " +
 			         "If the module is already installed, try removing the /tmp/luci-indexcache file.");
 		else
-			error404(`No page is registered at '/${join("/", resolved.ctx.request_path)}'.\n` +
+			error404(`No page is registered at '/${entityencode(join("/", resolved.ctx.request_path))}'.\n` +
 			         "If this url belongs to an extension, make sure it is properly installed.\n" +
 			         "If the extension was recently installed, try removing the /tmp/luci-indexcache file.");
 		break;
diff --git a/modules/luci-base/ucode/template/header.ut b/modules/luci-base/ucode/template/header.ut
index e87560010f..7dc3742a9d 100644
--- a/modules/luci-base/ucode/template/header.ut
+++ b/modules/luci-base/ucode/template/header.ut
@@ -10,7 +10,7 @@
 <script type="text/javascript" src="{{ resource }}/promis.min.js"></script>
 <script type="text/javascript" src="{{ resource }}/luci.js"></script>
 <script type="text/javascript">
-	L = new LuCI({{ {
+	L = new LuCI({{ replace(`${ {
 		media          : media,
 		resource       : resource,
 		scriptname     : http.getenv("SCRIPT_NAME"),
@@ -28,5 +28,5 @@
 		apply_timeout  : max(+config.apply.timeout  ||   5,  1),
 		apply_display  : max(+config.apply.display  || 1.5,  1),
 		rollback_token : rollback_token
-	} }});
+	} }`, '/', '\\/') }});
 </script>