diff --git a/seminar/admin.py b/seminar/admin.py
index 5c898106..e53cbeb0 100644
--- a/seminar/admin.py
+++ b/seminar/admin.py
@@ -249,7 +249,7 @@ class ProblemAdminForm(forms.ModelForm):
     text_zadani = forms.CharField(widget=CKEditorWidget(), required=False, **field_labels(Problem, 'text_zadani'))
     text_reseni = forms.CharField(widget=CKEditorWidget(), required=False, **field_labels(Problem, 'text_reseni'))
     text_org = forms.CharField(widget=CKEditorWidget(), required=False, **field_labels(Problem, 'text_org'))
-    zamereni = TaggitField(widget=TaggitWidget('TagAutocomplete'))
+    zamereni = TaggitField(widget=TaggitWidget('TagAutocomplete'), required=False)
     class Meta:
         model = Problem
         exclude = []