diff --git a/alkatorapi/views.py b/alkatorapi/views.py
index ccdf19e..3f41226 100644
--- a/alkatorapi/views.py
+++ b/alkatorapi/views.py
@@ -45,7 +45,7 @@ def register(request):
     invoice_date = datetime.today()
     invoice_id = invoice_date.year * 1000000 + invoice_date.month * 10000 + invoice_date.day * 100
 
-    latest_user = User.objects.filter.latest("invoice_id")
+    latest_user = User.objects.latest("invoice_id")
     if latest_user.invoice_id < invoice_id:
         invoice_id = invoice_id + 1
     else: