diff --git a/atlas/forms.py b/atlas/forms.py
index 7b5f57fa..e05434c1 100755
--- a/atlas/forms.py
+++ b/atlas/forms.py
@@ -210,7 +210,9 @@ CaseDifferentialFormSet = inlineformset_factory(
     extra=1,
     max_num=10,
     widgets={
-        "condition": autocomplete.ModelSelect2(url="atlas:condition-autocomplete"),
+        "condition": autocomplete.ModelSelect2Multiple(
+            url="atlas:condition-autocomplete"
+        ),
     },
 )