diff --git a/polymorphic/formsets/utils.py b/polymorphic/formsets/utils.py
index 3d55f8b..5dac6a7 100644
--- a/polymorphic/formsets/utils.py
+++ b/polymorphic/formsets/utils.py
@@ -1,11 +1,17 @@
 """
 Internal utils
 """
+import django
 
 
 def add_media(dest, media):
     """
     Optimized version of django.forms.Media.__add__() that doesn't create new objects.
+
+    Only required for Django < 2.0
     """
-    dest.add_css(media._css)
-    dest.add_js(media._js)
+    if django.VERSION >= (2, 0):
+        dest += media
+    else:
+        dest.add_css(media._css)
+        dest.add_js(media._js)