diff --git a/kfet/management/commands/graphs.py b/kfet/management/commands/graphs.py
index ba4424a4..72cf4ca8 100644
--- a/kfet/management/commands/graphs.py
+++ b/kfet/management/commands/graphs.py
@@ -213,7 +213,7 @@ class Command(BaseCommand):
 
         def sanitize(opes):
             # return opes.extra(select={'hour': "EXTRACT(hour FROM kfet_operationgroup.at)"}, having=["`hour` >= 17 OR `hour` <= 5"])
-            return opes.extra(where=["EXTRACT(HOUR FROM kfet_operationgroup.at) >= 17 OR EXTRACT(HOUR FROM kfet_operationgroup.at) <= 5"])
+            return opes.extra(where=["EXTRACT(HOUR FROM kfet_operationgroup.at) >= 18 OR EXTRACT(HOUR FROM kfet_operationgroup.at) <= 4"])
 
         opes = Operation.objects.filter(type='PURCHASE', canceled_at=None)
         last_date = opes.order_by('-group__at').first().group.at