diff --git a/aleksis/apps/chronos/migrations/0007_advanced_models_from_untis.py b/aleksis/apps/chronos/migrations/0007_advanced_models_from_untis.py
index f6bd2e4e0ac6467c3549f50adf7d97a7909ea0ba..add8928ade55d08003bf2c829aaec8959872e8ad 100644
--- a/aleksis/apps/chronos/migrations/0007_advanced_models_from_untis.py
+++ b/aleksis/apps/chronos/migrations/0007_advanced_models_from_untis.py
@@ -76,17 +76,17 @@ class Migration(migrations.Migration):
         ),
         migrations.AddField(
             model_name='exam',
-            name='fk_lesson',
+            name='lesson',
             field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='lesson', to='chronos.Lesson'),
         ),
         migrations.AddField(
             model_name='absence',
-            name='fk_person',
-            field=models.ManyToManyField(related_name='fk_person', to='core.Person'),
+            name='person',
+            field=models.ManyToManyField(related_name='person', to='core.Person'),
         ),
         migrations.AddField(
             model_name='absence',
-            name='fk_reason',
+            name='reason',
             field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='reason', to='chronos.AbsenceReason'),
         ),
         migrations.AddIndex(
diff --git a/aleksis/apps/chronos/models.py b/aleksis/apps/chronos/models.py
index f50be6210ca9c3e5381d6ec233f42841c51e1a41..012abce8fb7f11fb8bb7593cbfdf03237aef81fc 100644
--- a/aleksis/apps/chronos/models.py
+++ b/aleksis/apps/chronos/models.py
@@ -591,8 +591,8 @@ class AbsenceReason(ExtensibleModel):
         verbose_name = _("Absence reason")
 
 class Absence(ExtensibleModel):
-    fk_reason = models.ForeignKey("AbsenceReason", on_delete=models.CASCADE, related_name="reason")
-    fk_person = models.ManyToManyField("core.Person", related_name="fk_person")
+    reason = models.ForeignKey("AbsenceReason", on_delete=models.CASCADE, related_name="reason")
+    person = models.ManyToManyField("core.Person", related_name="fk_person")
 
     datefrom = models.DateField(verbose_name=_("Effective start date of absence"), null=True)
     dateto = models.DateField(verbose_name=_("Effective end date of absence"), null=True)
@@ -607,7 +607,7 @@ class Absence(ExtensibleModel):
 
 
 class Exam(ExtensibleModel):
-    fk_lesson = models.ForeignKey("Lesson", on_delete=models.CASCADE, related_name="lesson")
+    lesson = models.ForeignKey("Lesson", on_delete=models.CASCADE, related_name="lesson")
 
     date = models.DateField(verbose_name=_("Date of exam"), null=True)
     periodfrom = models.IntegerField(verbose_name=_("Effective start period of exam"), null=True)