diff --git a/seminar/migrations/0097_auto_20210903_0112.py b/seminar/migrations/0097_auto_20210903_0112.py
new file mode 100644
index 00000000..5704c808
--- /dev/null
+++ b/seminar/migrations/0097_auto_20210903_0112.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.24 on 2021-09-02 23:12
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('seminar', '0096_fix_zamereni'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tema',
+            name='obrazek',
+            field=models.ImageField(blank=True, null=True, upload_to='', verbose_name='Obrázek na rozcestník'),
+        ),
+    ]
diff --git a/seminar/models.py b/seminar/models.py
index 6969b91d..08f05df0 100644
--- a/seminar/models.py
+++ b/seminar/models.py
@@ -946,7 +946,7 @@ class Tema(Problem):
 		on_delete=models.PROTECT)
 
 	abstrakt = models.TextField('Abstrakt na rozcestník', blank=True)
-	obrazek = models.ImageField('Obrázek na rozcestník', null=True)
+	obrazek = models.ImageField('Obrázek na rozcestník', null=True, blank=True)
 
 	@cached_property
 	def kod_v_rocniku(self):