diff --git a/pywal/gen_colors.py b/pywal/gen_colors.py
index 773c1a8..f626125 100755
--- a/pywal/gen_colors.py
+++ b/pywal/gen_colors.py
@@ -22,8 +22,8 @@ def random_img(img_dir):
 
     # Add all images to a list excluding the current wallpaper.
     file_types = (".png", ".jpg", ".jpeg", ".jpe", ".gif")
-    images = [img for img in os.listdir(img_dir)
-              if img.endswith(file_types) and img != current_wall]
+    images = [img for img in os.scandir(img_dir)
+              if img.name.endswith(file_types) and img.name != current_wall]
 
     return pathlib.Path(img_dir / random.choice(images))