diff --git a/src/registrar/admin.py b/src/registrar/admin.py
index dc7e45895..21dbd7f08 100644
--- a/src/registrar/admin.py
+++ b/src/registrar/admin.py
@@ -405,7 +405,7 @@ class DomainApplicationAdmin(ListHeaderAdmin):
 
                     messages.error(
                         request,
-                        "This action is not permitted, the domain "
+                        "This action is not permitted. The domain "
                         + "is already active.",
                     )
 
diff --git a/src/registrar/tests/test_admin.py b/src/registrar/tests/test_admin.py
index e23eafc84..82568781e 100644
--- a/src/registrar/tests/test_admin.py
+++ b/src/registrar/tests/test_admin.py
@@ -469,7 +469,7 @@ class TestDomainApplicationAdmin(TestCase):
             # Assert that the error message was called with the correct argument
             messages.error.assert_called_once_with(
                 request,
-                "This action is not permitted, the domain " + "is already active.",
+                "This action is not permitted. The domain " + "is already active.",
             )
 
     def test_side_effects_when_saving_approved_to_rejected(self):
@@ -545,7 +545,7 @@ class TestDomainApplicationAdmin(TestCase):
             # Assert that the error message was called with the correct argument
             messages.error.assert_called_once_with(
                 request,
-                "This action is not permitted, the domain " + "is already active.",
+                "This action is not permitted. The domain " + "is already active.",
             )
 
     def test_side_effects_when_saving_approved_to_ineligible(self):