diff --git a/aleksis/core/mixins.py b/aleksis/core/mixins.py
index b7401b6137e0e41f30f27f42275b93420603e7fd..2041ca713c95f1df0504fb6832f57546a9066e79 100644
--- a/aleksis/core/mixins.py
+++ b/aleksis/core/mixins.py
@@ -65,7 +65,7 @@ class ExtensibleModel():
     # Defines a material design icon associated with this type of model
     icon_ = "radio_button_unchecked"
 
-    site = models.ForeignKey(Site, on_delete=models.CASCADE)
+    site = models.ForeignKey(Site, on_delete=models.CASCADE, default=Site.objects.get_current, editable=False)
     objects = CurrentSiteManager()
     objects_all_sites = models.Manager()