diff --git a/src/filters.php b/src/filters.php
index 3d7789c..531e9df 100644
--- a/src/filters.php
+++ b/src/filters.php
@@ -53,7 +53,7 @@ add_filter('template_include', function ($template) {
     echo template($template, $data);
 
     // Return a blank file to make WordPress happy
-    return get_template_directory() . '/index.php';
+    return get_theme_file_path('index.php');
 }, PHP_INT_MAX);
 
 /**