diff --git a/billard/tasks.py b/billard/tasks.py
index e3194f0..fceae52 100644
--- a/billard/tasks.py
+++ b/billard/tasks.py
@@ -10,7 +10,7 @@ log = logging.getLogger(__name__)
 
 @shared_task
 def process_location_data():
-    data = LocationData.objects.filter(processed=False)
+    data = LocationData.objects.filter(processed=False).order_by('tst')
     for ld in data:
         cli = Client.objects.filter(uuid=ld.client_id, desks__desk_no=ld.desk_no)
         if cli.count() < 1: