diff --git a/manager/templatetags/manager.py b/manager/templatetags/manager.py
index 58966d0..ecb4712 100644
--- a/manager/templatetags/manager.py
+++ b/manager/templatetags/manager.py
@@ -5,4 +5,4 @@ register = template.Library()
 
 @register.simple_tag
 def orgaString(user):
-    return ", ".join(str(orga) for orga in Organization.objects.filter(users=user))
+    return ", ".join(str(orga) for orga in user.organization_set.all())