diff --git a/atlas/views.py b/atlas/views.py
index 06bff41a..f3d5b09b 100755
--- a/atlas/views.py
+++ b/atlas/views.py
@@ -386,7 +386,7 @@ class AtlasUpdate(
                 self.request.POST, self.request.FILES, instance=self.object
             )
             context["series_formset"].full_clean()
-            context["series_formset"].full_clean()
+            context["casedifferential_formset"].full_clean()
         else:
             context["series_formset"] = SeriesFormSet(instance=self.object)
             context["casedifferential_formset"] = SeriesImageFormSet(