diff --git a/fet2020/intern/models.py b/fet2020/intern/models.py
index c4b28139..8de18a76 100644
--- a/fet2020/intern/models.py
+++ b/fet2020/intern/models.py
@@ -106,7 +106,7 @@ class Document(models.Model):
         verbose_name_plural = "Dokumente"
 
         constraints = [
-            UniqueConstraint(fields=['title', 'date', 'documentation'], name='unique_document'),
+            UniqueConstraint(fields=['title', 'date', 'documentation'], name='unique_intern_document'),
         ]
 
     def clean(self):