diff --git a/src/registrar/forms/domain.py b/src/registrar/forms/domain.py
index 915699fbe..a9b3cfb83 100644
--- a/src/registrar/forms/domain.py
+++ b/src/registrar/forms/domain.py
@@ -149,33 +149,34 @@ class ContactForm(forms.ModelForm):
             self.fields[field_name].required = True
 
         # Set custom error messages
-        self.fields["first_name"].error_messages = {'required': 'Enter your first name / given name.'}
-        self.fields["last_name"].error_messages = {'required': 'Enter your last name / family name.'}
+        self.fields["first_name"].error_messages = {"required": "Enter your first name / given name."}
+        self.fields["last_name"].error_messages = {"required": "Enter your last name / family name."}
         self.fields["title"].error_messages = {
-            'required': 'Enter your title or role in your organization (e.g., Chief Information Officer)'
+            "required": "Enter your title or role in your organization (e.g., Chief Information Officer)"
         }
         self.fields["email"].error_messages = {
-            'required': 'Enter your email address in the required format, like name@example.com.'
+            "required": "Enter your email address in the required format, like name@example.com."
         }
-        self.fields["phone"].error_messages = {'required': 'Enter your phone number.'}
+        self.fields["phone"].error_messages = {"required": "Enter your phone number."}
 
 
 class AuthorizingOfficialContactForm(ContactForm):
     """Form for updating authorizing official contacts."""
+
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
         # Set custom error messages
-        self.fields["first_name"].error_messages = {'required': 'Enter the first name / given name of this contact.'}
-        self.fields["last_name"].error_messages = {'required': 'Enter the last name / family name of this contact.'}
+        self.fields["first_name"].error_messages = {"required": "Enter the first name / given name of this contact."}
+        self.fields["last_name"].error_messages = {"required": "Enter the last name / family name of this contact."}
         self.fields["title"].error_messages = {
-            'required': 'Enter the title or role in your organization of this contact \
-            (e.g., Chief Information Officer).'
+            "required": "Enter the title or role in your organization of this contact \
+            (e.g., Chief Information Officer)."
         }
         self.fields["email"].error_messages = {
-            'required': 'Enter an email address in the required format, like name@example.com.'
+            "required": "Enter an email address in the required format, like name@example.com."
         }
-        self.fields["phone"].error_messages = {'required': 'Enter a phone number for this contact.'}
+        self.fields["phone"].error_messages = {"required": "Enter a phone number for this contact."}
 
 
 class DomainSecurityEmailForm(forms.Form):