diff --git a/longs/forms.py b/longs/forms.py
index 6690f768..13bd2052 100755
--- a/longs/forms.py
+++ b/longs/forms.py
@@ -61,12 +61,11 @@ class LongCreationDefaultForm(ModelForm):
 class LongSeriesForm(ModelForm):
     def __init__(self, *args, **kwargs):
         super(LongSeriesForm, self).__init__(*args, **kwargs)
-        self.fields["examination"] = ModelMultipleChoiceField(
+        self.fields["examination"] = ModelChoiceField(
             queryset=Examination.objects.all(),
             widget=FilteredSelectMultiple(verbose_name="Examination", is_stacked=False),
         )
 
-
     class Meta:
         model = LongSeries
         exclude = []
diff --git a/longs/migrations/0009_auto_20210205_1146.py b/longs/migrations/0009_auto_20210205_1146.py
new file mode 100644
index 00000000..959226b9
--- /dev/null
+++ b/longs/migrations/0009_auto_20210205_1146.py
@@ -0,0 +1,24 @@
+# Generated by Django 3.1.3 on 2021-02-05 11:46
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('longs', '0008_auto_20210205_1013'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='longseries',
+            name='description',
+            field=models.TextField(blank=True, help_text='Description of stack, for admin organisation, will not be visible when taking'),
+        ),
+        migrations.AlterField(
+            model_name='longseries',
+            name='long',
+            field=models.ForeignKey(help_text='The question this series should be associated with', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='series', to='longs.long'),
+        ),
+    ]