diff --git a/app/dao/provider_details_dao.py b/app/dao/provider_details_dao.py
index a3e3cf24c..69665ef4d 100644
--- a/app/dao/provider_details_dao.py
+++ b/app/dao/provider_details_dao.py
@@ -84,7 +84,8 @@ def dao_reduce_sms_provider_priority(identifier, *, time_threshold):
     amount_to_reduce_by = 10
     providers_list = _get_sms_providers_for_update(time_threshold)
 
-    if not providers_list:
+    if len(providers_list) < 2:
+        current_app.logger.info("Not adjusting providers, number of active providers is less than 2.")
         return
 
     providers = {provider.identifier: provider for provider in providers_list}
diff --git a/tests/app/dao/test_provider_details_dao.py b/tests/app/dao/test_provider_details_dao.py
index a77f1a52b..eb7ed5d98 100644
--- a/tests/app/dao/test_provider_details_dao.py
+++ b/tests/app/dao/test_provider_details_dao.py
@@ -234,7 +234,7 @@ def test_reduce_sms_provider_priority_does_nothing_if_providers_have_recently_ch
     mocker,
     restore_provider_details,
 ):
-    mock_get_providers = mocker.patch('app.dao.provider_details_dao._get_sms_providers_for_update', return_value=None)
+    mock_get_providers = mocker.patch('app.dao.provider_details_dao._get_sms_providers_for_update', return_value=[])
     mock_adjust = mocker.patch('app.dao.provider_details_dao._adjust_provider_priority')
 
     dao_reduce_sms_provider_priority('firetext', time_threshold=timedelta(minutes=5))
@@ -243,6 +243,20 @@ def test_reduce_sms_provider_priority_does_nothing_if_providers_have_recently_ch
     assert mock_adjust.called is False
 
 
+def test_reduce_sms_provider_priority_does_nothing_if_there_is_only_one_active_provider(
+    mocker,
+    restore_provider_details,
+):
+    firetext = get_provider_details_by_identifier('firetext')
+    firetext.active = False
+
+    mock_adjust = mocker.patch('app.dao.provider_details_dao._adjust_provider_priority')
+
+    dao_reduce_sms_provider_priority('firetext', time_threshold=timedelta(minutes=5))
+
+    assert mock_adjust.called is False
+
+
 @pytest.mark.parametrize('existing_mmg, existing_firetext, new_mmg, new_firetext', [
     (50, 50, 60, 40),  # not just 50/50 - 60/40 specifically
     (65, 35, 60, 40),  # doesn't overshoot if there's less than 10 difference