diff --git a/django/db/migrations/loader.py b/django/db/migrations/loader.py
index 30a1485244..661f74ff97 100644
--- a/django/db/migrations/loader.py
+++ b/django/db/migrations/loader.py
@@ -1,4 +1,3 @@
-
 from __future__ import unicode_literals
 
 from importlib import import_module
@@ -63,6 +62,8 @@ class MigrationLoader(object):
         self.unmigrated_apps = set()
         self.migrated_apps = set()
         for app_config in apps.get_app_configs():
+            if app_config.models_module is None:
+                continue
             # Get the migrations module directory
             module_name = self.migrations_module(app_config.label)
             was_loaded = module_name in sys.modules