diff --git a/src/registrar/migrations/0139_alter_domainrequest_action_needed_reason.py b/src/registrar/migrations/0139_alter_domainrequest_action_needed_reason.py
new file mode 100644
index 000000000..c3af6905e
--- /dev/null
+++ b/src/registrar/migrations/0139_alter_domainrequest_action_needed_reason.py
@@ -0,0 +1,28 @@
+# Generated by Django 4.2.10 on 2024-11-27 21:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("registrar", "0138_alter_domaininvitation_status"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="domainrequest",
+            name="action_needed_reason",
+            field=models.TextField(
+                blank=True,
+                choices=[
+                    ("eligibility_unclear", "Unclear organization eligibility"),
+                    ("questionable_senior_official", "Questionable senior official"),
+                    ("already_has_a_domain", "Already has a domain"),
+                    ("bad_name", "Doesn’t meet naming requirements"),
+                    ("other", "Other (no auto-email sent)"),
+                ],
+                null=True,
+            ),
+        ),
+    ]
diff --git a/src/registrar/models/domain_request.py b/src/registrar/models/domain_request.py
index 3fa889a3b..44d8511b0 100644
--- a/src/registrar/models/domain_request.py
+++ b/src/registrar/models/domain_request.py
@@ -280,7 +280,7 @@ class ActionNeededReasons(models.TextChoices):
 
         ELIGIBILITY_UNCLEAR = ("eligibility_unclear", "Unclear organization eligibility")
         QUESTIONABLE_SENIOR_OFFICIAL = ("questionable_senior_official", "Questionable senior official")
-        ALREADY_HAS_DOMAINS = ("already_has_domains", "Already has domains")
+        ALREADY_HAS_A_DOMAIN = ("already_has_a_domain", "Already has a domain")
         BAD_NAME = ("bad_name", "Doesn’t meet naming requirements")
         OTHER = ("other", "Other (no auto-email sent)")
 
diff --git a/src/registrar/templates/emails/action_needed_reasons/already_has_domains.txt b/src/registrar/templates/emails/action_needed_reasons/already_has_a_domain.txt
similarity index 100%
rename from src/registrar/templates/emails/action_needed_reasons/already_has_domains.txt
rename to src/registrar/templates/emails/action_needed_reasons/already_has_a_domain.txt
diff --git a/src/registrar/tests/test_admin_request.py b/src/registrar/tests/test_admin_request.py
index d2e4c1c1b..df0902719 100644
--- a/src/registrar/tests/test_admin_request.py
+++ b/src/registrar/tests/test_admin_request.py
@@ -203,7 +203,7 @@ def assert_status_order(normalized_content, statuses):
         domain_request.save()
 
         domain_request.action_needed()
-        domain_request.action_needed_reason = DomainRequest.ActionNeededReasons.ALREADY_HAS_DOMAINS
+        domain_request.action_needed_reason = DomainRequest.ActionNeededReasons.ALREADY_HAS_A_DOMAIN
         domain_request.save()
 
         # Let's just change the action needed reason
@@ -230,7 +230,7 @@ def assert_status_order(normalized_content, statuses):
             "In review",
             "Rejected - Purpose requirements not met",
             "Action needed - Unclear organization eligibility",
-            "Action needed - Already has domains",
+            "Action needed - Already has a domain",
             "In review",
             "Submitted",
             "Started",
@@ -241,7 +241,7 @@ def assert_status_order(normalized_content, statuses):
         assert_status_count(normalized_content, "Started", 1)
         assert_status_count(normalized_content, "Submitted", 1)
         assert_status_count(normalized_content, "In review", 2)
-        assert_status_count(normalized_content, "Action needed - Already has domains", 1)
+        assert_status_count(normalized_content, "Action needed - Already has a domain", 1)
         assert_status_count(normalized_content, "Action needed - Unclear organization eligibility", 1)
         assert_status_count(normalized_content, "Rejected - Purpose requirements not met", 1)
 
@@ -685,9 +685,9 @@ def test_action_needed_sends_reason_email_prod_bcc(self):
         # Create a sample domain request
         domain_request = completed_domain_request(status=in_review, user=_creator)
 
-        # Test the email sent out for already_has_domains
-        already_has_domains = DomainRequest.ActionNeededReasons.ALREADY_HAS_DOMAINS
-        self.transition_state_and_send_email(domain_request, action_needed, action_needed_reason=already_has_domains)
+        # Test the email sent out for already_has_a_domain
+        already_has_a_domain = DomainRequest.ActionNeededReasons.ALREADY_HAS_A_DOMAIN
+        self.transition_state_and_send_email(domain_request, action_needed, action_needed_reason=already_has_a_domain)
 
         self.assert_email_is_accurate("ORGANIZATION ALREADY HAS A .GOV DOMAIN", 0, EMAIL, bcc_email_address=BCC_EMAIL)
         self.assertEqual(len(self.mock_client.EMAILS_SENT), 1)