diff --git a/src/registrar/forms/domain.py b/src/registrar/forms/domain.py
index e2dd6abb8..5a239af2f 100644
--- a/src/registrar/forms/domain.py
+++ b/src/registrar/forms/domain.py
@@ -37,7 +37,7 @@ class DomainAddUserForm(forms.Form):
         max_length=None,
         error_messages={
             "invalid": ("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.")
+            "required": ("Enter an email address in the required format, like name@example.com."),
         },
         validators=[
             MaxLengthValidator(
@@ -465,8 +465,8 @@ class DomainOrgNameAddressForm(forms.ModelForm):
             )
         ],
         error_messages={
-            'required': "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
-        }
+            "required": "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
+        },
     )
 
     class Meta:
diff --git a/src/registrar/forms/domain_request_wizard.py b/src/registrar/forms/domain_request_wizard.py
index 343453084..b99ae3344 100644
--- a/src/registrar/forms/domain_request_wizard.py
+++ b/src/registrar/forms/domain_request_wizard.py
@@ -228,7 +228,7 @@ class SeniorOfficialForm(RegistrarForm):
         max_length=None,
         error_messages={
             "invalid": ("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.")
+            "required": ("Enter an email address in the required format, like name@example.com."),
         },
         validators=[
             MaxLengthValidator(
@@ -607,7 +607,7 @@ class CisaRepresentativeForm(BaseDeletableRegistrarForm):
         required=False,
         error_messages={
             "invalid": ("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.")
+            "required": ("Enter an email address in the required format, like name@example.com."),
         },
         validators=[
             MaxLengthValidator(
diff --git a/src/registrar/forms/portfolio.py b/src/registrar/forms/portfolio.py
index d8f052b71..999d76d51 100644
--- a/src/registrar/forms/portfolio.py
+++ b/src/registrar/forms/portfolio.py
@@ -21,8 +21,8 @@ class PortfolioOrgAddressForm(forms.ModelForm):
             )
         ],
         error_messages={
-            'required': "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
-        }
+            "required": "Enter a 5-digit or 9-digit zip code, like 12345 or 12345-6789.",
+        },
     )
 
     class Meta: