diff --git a/src/Plugin.php b/src/Plugin.php
index 28703c2d..b3b5bb88 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -269,7 +269,7 @@ private function updateInstalledPaths()
             $finder->files()
               ->ignoreVCS(true)
               ->in($packageInstallPath)
-              ->depth('> 1')
+              ->depth('>= 1')
               ->depth('< 4')
               ->name('ruleset.xml');
             foreach ($finder as $ruleset) {