diff --git a/django_select2/media.py b/django_select2/media.py
index 5843ad9..1c9d55d 100644
--- a/django_select2/media.py
+++ b/django_select2/media.py
@@ -53,4 +53,4 @@ def get_select2_css_libs(light=False):
                 css_files = ('css/select2.min.css',)
             else:
                 css_files = ('css/all.min.css',)
-    return (django_select2_static(f) for f in css_files)
+    return [django_select2_static(f) for f in css_files]