diff --git a/aleksis/apps/alsijil/data_checks.py b/aleksis/apps/alsijil/data_checks.py
index 864f019646411443605b0495075ba6acfb47219b..cb056e8cb3728a01c98e110f15e12da629df7ff9 100644
--- a/aleksis/apps/alsijil/data_checks.py
+++ b/aleksis/apps/alsijil/data_checks.py
@@ -113,7 +113,7 @@ class LessonDocumentationOnHolidaysDataCheck(DataCheck):
 
         documentations = LessonDocumentation.objects.not_empty().annotate_date_range()
 
-        q = Q()
+        q = Q(pk__in=[])
         for holiday in holidays:
             q = q | Q(day_end__gte=holiday.date_start, day_start__lte=holiday.date_end)
         documentations = documentations.filter(q)
@@ -147,7 +147,7 @@ class PersonalNoteOnHolidaysDataCheck(DataCheck):
 
         personal_notes = PersonalNote.objects.not_empty().annotate_date_range()
 
-        q = Q()
+        q = Q(pk__in=[])
         for holiday in holidays:
             q = q | Q(day_end__gte=holiday.date_start, day_start__lte=holiday.date_end)
         personal_notes = personal_notes.filter(q)