diff --git a/wp-includes/class-wp-theme.php b/wp-includes/class-wp-theme.php
index fb8dbc369b..e099f39ba3 100644
--- a/wp-includes/class-wp-theme.php
+++ b/wp-includes/class-wp-theme.php
@@ -814,7 +814,7 @@ final class WP_Theme implements ArrayAccess {
 		else
 			$theme_root_uri = $this->get_theme_root_uri();
 
-		return $theme_root . '/' . $this->template;
+		return $theme_root_uri . '/' . $this->template;
 	}
 
 	/**