diff --git a/include/acl_selectors.php b/include/acl_selectors.php
index 9ef1977bc5..725f69a656 100644
--- a/include/acl_selectors.php
+++ b/include/acl_selectors.php
@@ -388,13 +388,9 @@ function populate_acl($user = null, $show_jotnets = false) {
 }
 
 function construct_acl_data(App $a, $user) {
-
-	$arr = array('user' => $user);
-	call_hooks('construct_acl_data', $arr);
-
-	if (isset($arr['cancel'])) {
-		return;
-	}
+	// This function is now deactivated. It seems as if the generated data isn't used anywhere.
+	// We will remove the function completely before the release of 3.5.3 when there won't be any issues.
+	return;
 
 	// Get group and contact information for html ACL selector
 	$acl_data = acl_lookup($a, 'html');
diff --git a/view/theme/frio/theme.php b/view/theme/frio/theme.php
index cbb7324bcb..551f39c8f7 100644
--- a/view/theme/frio/theme.php
+++ b/view/theme/frio/theme.php
@@ -48,7 +48,6 @@ function frio_install() {
 	register_hook('contact_photo_menu', 'view/theme/frio/theme.php', 'frio_contact_photo_menu');
 	register_hook('nav_info', 'view/theme/frio/theme.php', 'frio_remote_nav');
 	register_hook('acl_lookup_end', 'view/theme/frio/theme.php', 'frio_acl_lookup');
-	register_hook('construct_acl_data', 'view/theme/frio/theme.php', 'frio_construct_acl_data');
 
 	logger("installed theme frio");
 }
@@ -59,7 +58,6 @@ function frio_uninstall() {
 	unregister_hook('contact_photo_menu', 'view/theme/frio/theme.php', 'frio_contact_photo_menu');
 	unregister_hook('nav_info', 'view/theme/frio/theme.php', 'frio_remote_nav');
 	unregister_hook('acl_lookup_end', 'view/theme/frio/theme.php', 'frio_acl_lookup');
-	unregister_hook('construct_acl_data', 'view/theme/frio/theme.php', 'frio_construct_acl_data');
 
 	logger("uninstalled theme frio");
 }
@@ -323,15 +321,3 @@ function frio_acl_lookup(App $a, &$results) {
 		$results["tot"] = $total;
 	}
 }
-
-/**
- * @brief: Deactivate the old style acl selector
- *
- * We don't need the old one for Frio. Deactivating makes page loading much faster
- *
- * @param App $a The app data @TODO Unused
- * @param array $arr We use this array to stop processing. See construct_acl_data in include/acl_selectors.php
- */
-function frio_construct_acl_data(App $a, &$arr) {
-	$arr['cancel'] = true;
-}