diff --git a/scipost/models.py b/scipost/models.py
index d2ce083c96aedc966c09ac676797310ecb8e52f7..be2d448c1628adf463d4ce056b05af6cafd5cfba 100644
--- a/scipost/models.py
+++ b/scipost/models.py
@@ -110,6 +110,7 @@ class Contributor(models.Model):
     def formal_str(self):
         return '%s %s' % (self.get_title_display(), self.user.last_name)
 
+    @property
     def is_active(self):
         """
         Checks if the Contributor is registered, vetted,