diff --git a/alkatorapi/views.py b/alkatorapi/views.py
index 03da18d..42212e4 100644
--- a/alkatorapi/views.py
+++ b/alkatorapi/views.py
@@ -167,7 +167,7 @@ def results(request):
     results = []
     n = 1
     for user in User.objects.filter(alkator_class=2).order_by('duration'):
-        if user.duration:
+        if user.duration is not None;:
             if user.alkator_category == 1:
                 order = f'{n}.'
                 n += 1
@@ -180,10 +180,10 @@ def results(request):
                 'starting_number': user.starting_number,
             })
     for user in User.objects.filter(alkator_class=2).order_by('duration'):
-        if not user.duration and user.starting_number:
+        if user.duration is None and user.starting_number:
             results.append({
-                'order': 'DNF'
-                'duration' 'Nedonkočil',
+                'order': 'DNF',
+                'duration': 'Nedonkočil',
                 'starting_number': user.starting_number,
                 'alkator_category': ''
             })