diff --git a/galerie/migrations/0016_alter_obrazek_galerie.py b/galerie/migrations/0016_alter_obrazek_galerie.py
new file mode 100644
index 00000000..8c8e57af
--- /dev/null
+++ b/galerie/migrations/0016_alter_obrazek_galerie.py
@@ -0,0 +1,19 @@
+# Generated by Django 4.2.16 on 2025-04-30 19:02
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('galerie', '0015_alter_galerie_galerie_up'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='obrazek',
+            name='galerie',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='galerie.galerie'),
+        ),
+    ]
diff --git a/galerie/models.py b/galerie/models.py
index 692f7953..44c1120e 100644
--- a/galerie/models.py
+++ b/galerie/models.py
@@ -56,7 +56,7 @@ class Obrazek(models.Model):
 	nazev = models.CharField('Název', max_length=50, blank=True, null=True)
 	popis = models.TextField('Popis', blank=True, null=True)
 	datum_vlozeni = models.DateTimeField('Datum vložení', auto_now_add=True)
-	galerie = models.ForeignKey('Galerie', blank=True, null=True, on_delete=models.SET_NULL)
+	galerie = models.ForeignKey('Galerie', blank=True, null=True, on_delete=models.CASCADE)
 	poradi = models.IntegerField('Pořadí', blank=True, null=True)
 
 	def __str__(self):