diff --git a/src/c3nav/mapdata/models/base.py b/src/c3nav/mapdata/models/base.py
index 7d8f7902..4bd10fb7 100644
--- a/src/c3nav/mapdata/models/base.py
+++ b/src/c3nav/mapdata/models/base.py
@@ -10,7 +10,7 @@ MAPITEM_TYPES = OrderedDict()
 class MapItemMeta(ModelBase):
     def __new__(mcs, name, bases, attrs):
         cls = super().__new__(mcs, name, bases, attrs)
-        if not cls._meta.abstract:
+        if not cls._meta.abstract and name != 'Source':
             MAPITEM_TYPES[name.lower()] = cls
         return cls
 
diff --git a/src/c3nav/mapdata/models/source.py b/src/c3nav/mapdata/models/source.py
index 0a99195e..fbf07604 100644
--- a/src/c3nav/mapdata/models/source.py
+++ b/src/c3nav/mapdata/models/source.py
@@ -1,14 +1,13 @@
 from django.db import models
-from django.db.models import Model
 from django.utils.translation import ugettext_lazy as _
 
+from c3nav.mapdata.models.base import MapItem
 
-class Source(Model):
+
+class Source(MapItem):
     """
     A map source, images of levels that can be useful as backgrounds for the map editor
     """
-    name = models.SlugField(_('Name'), unique=True, max_length=50)
-    package = models.ForeignKey('mapdata.Package', on_delete=models.CASCADE, verbose_name=_('map package'))
     bottom = models.DecimalField(_('bottom coordinate'), max_digits=6, decimal_places=2)
     left = models.DecimalField(_('left coordinate'), max_digits=6, decimal_places=2)
     top = models.DecimalField(_('top coordinate'), max_digits=6, decimal_places=2)