diff --git a/atlas/forms.py b/atlas/forms.py
index 7640554d..d40153bd 100755
--- a/atlas/forms.py
+++ b/atlas/forms.py
@@ -118,11 +118,10 @@ class ConditionForm(ModelForm):
     class Meta:
         model = Condition
         exclude = ["rcr_curriculum"]
-
         widgets = {
-            "synonym": autocomplete.ModelSelect2Multiple(
-                url="atlas:condition-autocomplete"
-            ),
+            # Use an AJAX/autocomplete single-select for canonical so users
+            # can search for existing canonical Conditions by name.
+            "canonical": autocomplete.ModelSelect2(url="atlas:condition-autocomplete"),
             "parent": autocomplete.ModelSelect2Multiple(
                 url="atlas:condition-autocomplete"
             ),