diff --git a/atst/forms/ko_review.py b/atst/forms/ko_review.py
index 624202e8..d0f723eb 100644
--- a/atst/forms/ko_review.py
+++ b/atst/forms/ko_review.py
@@ -6,7 +6,6 @@ from wtforms.fields import StringField, TextAreaField, FileField, FieldList
 from wtforms.validators import Optional, Length
 
 from .forms import CacheableForm
-from .validators import IsNumber
 
 from atst.utils.localization import translate
 
@@ -30,10 +29,7 @@ class KOReviewForm(CacheableForm):
         translate("forms.ko_review.to_number"), validators=[Length(min=10)]
     )
     loas = FieldList(
-        StringField(
-            translate("forms.ko_review.loa"),
-            validators=[Optional()],
-        )
+        StringField(translate("forms.ko_review.loa"), validators=[Optional()])
     )
     custom_clauses = TextAreaField(
         translate("forms.ko_review.custom_clauses_label"),