diff --git a/lib/modclean.js b/lib/modclean.js
index 246a95c..f3a6647 100644
--- a/lib/modclean.js
+++ b/lib/modclean.js
@@ -84,7 +84,7 @@ let defaults = {
      * @return {Boolean}      `true` if is a valid file, `false` if invalid file
      */
     emptyDirFilter: function(file) {
-        return !/(Thumbs\.db|\.DS_Store)$/i.test(file);
+        return /(Thumbs\.db|\.DS_Store)$/i.test(file);
     },
     /**
      * Custom options to pass into `glob` to further customize file searching. Will override existing options.