diff --git a/dronken/models.py b/dronken/models.py
index 04f3b32..a4a3d15 100644
--- a/dronken/models.py
+++ b/dronken/models.py
@@ -20,7 +20,7 @@ class Association(models.Model):
     name = models.CharField(max_length=255)
     short_name = models.CharField(max_length=255)
     slug = models.CharField(max_length=255)
-    intern = models.CharField(max_length=255)
+    intern = models.CharField(max_length=255, blank=True, null=True)
     state = models.CharField(choices=STATES, max_length=255)
     city = models.ForeignKey(to=City, on_delete=models.SET_NULL, blank=True, null=True)
     has_intern = models.BooleanField()