diff --git a/competition/models.py b/competition/models.py
index 5ed9344..a195784 100644
--- a/competition/models.py
+++ b/competition/models.py
@@ -736,7 +736,7 @@ class Meta:
     event = models.ForeignKey(Event, null=True, on_delete=models.SET_NULL)
 
     file = RestrictedFileField(
-        upload_to='publications/%Y',
+        upload_to='publications/%Y/',
         content_types=['application/pdf', 'application/zip'],
         verbose_name='súbor')
 
diff --git a/competition/serializers.py b/competition/serializers.py
index ab85c31..0a607a8 100644
--- a/competition/serializers.py
+++ b/competition/serializers.py
@@ -46,6 +46,11 @@ class Meta:
         model = models.Publication
         fields = '__all__'
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        self.fields['file'].parent = None
+
     def get_verbose_name(self, obj):
         return str(obj)