diff --git a/longs/forms.py b/longs/forms.py
index f8a2ccc7..68e02125 100755
--- a/longs/forms.py
+++ b/longs/forms.py
@@ -83,6 +83,8 @@ class LongSeriesForm(ModelForm):
             queryset=Modality.objects.all(),
         )
 
+        ModelForm.__init__(self, *args, **kwargs)
+
     class Meta:
         model = LongSeries
         exclude = []