diff --git a/functions.php b/functions.php
index 4d6ca47..1152ba8 100644
--- a/functions.php
+++ b/functions.php
@@ -90,8 +90,10 @@ add_action( 'after_setup_theme', 'curver_setup' );
 
 /*  Custom navigation
 /* ------------------------------------ */
-add_action( 'wp', function() {
+if ( ! class_exists( '\Curver\Nav' ) ) {
 	require_once 'functions/nav.php';
+}
+add_action( 'wp', function() {
 	$nav = new \Curver\Nav();
 	$nav->enqueue(
 		[
diff --git a/readme.txt b/readme.txt
index f885d1c..29a7126 100644
--- a/readme.txt
+++ b/readme.txt
@@ -84,6 +84,9 @@ Sidebar images
 
 == Changelog ==
 
+= 1.1.9 - 2021-05-25 =
+* Fixed compatibility issue with custom nav and various security plugins
+
 = 1.1.8 - 2021-03-03 =
 * Fixed: mobile menu tabbing will enter in the menu even when it's closed
 * Fixed: add styles to focus states of menu and search
diff --git a/style.css b/style.css
index 3627e42..457c7c1 100644
--- a/style.css
+++ b/style.css
@@ -1,7 +1,7 @@
 /*
 Theme Name: Curver
 Theme URI: http://alx.media/themes/curver/
-Version: 1.1.8
+Version: 1.1.9
 Requires at least: 5.0
 Requires PHP: 5.6
 Tested up to: 5.6