diff --git a/src/registrar/models/domain_application.py b/src/registrar/models/domain_application.py
index 310471c35..1f3d23d8c 100644
--- a/src/registrar/models/domain_application.py
+++ b/src/registrar/models/domain_application.py
@@ -625,7 +625,7 @@ class DomainApplication(TimeStampedModel):
     def withdraw(self):
         """Withdraw an application that has been submitted."""
 
-    @transition(field="status", source=[INVESTIGATING, APPROVED], target=REJECTED)
+    @transition(field="status", source=[IN_REVIEW, APPROVED], target=REJECTED)
     def reject(self, updated_domain_application):
         """Reject an application that has been submitted.
 
diff --git a/src/registrar/tests/test_admin.py b/src/registrar/tests/test_admin.py
index 4be5f0415..bcc7ebcc4 100644
--- a/src/registrar/tests/test_admin.py
+++ b/src/registrar/tests/test_admin.py
@@ -164,7 +164,7 @@ class TestDomainApplicationAdmin(TestCase):
 
         with boto3_mocking.clients.handler_for("sesv2", mock_client):
             # Create a sample application
-            application = completed_application(status=DomainApplication.INVESTIGATING)
+            application = completed_application(status=DomainApplication.IN_REVIEW)
 
             # Create a mock request
             request = self.factory.post(
@@ -210,7 +210,7 @@ class TestDomainApplicationAdmin(TestCase):
 
         with boto3_mocking.clients.handler_for("sesv2", mock_client):
             # Create a sample application
-            application = completed_application(status=DomainApplication.INVESTIGATING)
+            application = completed_application(status=DomainApplication.IN_REVIEW)
 
             # Create a mock request
             request = self.factory.post(