diff --git a/tests/unit/module_utils/test_core.py b/tests/unit/module_utils/test_core.py
index a49ea12cc7..05e9b68910 100644
--- a/tests/unit/module_utils/test_core.py
+++ b/tests/unit/module_utils/test_core.py
@@ -44,8 +44,8 @@ def test_warn_on_k8s_version(monkeypatch, stdin, capfd):
     assert return_value.get("warnings") is not None
     warnings = return_value["warnings"]
     assert len(warnings) == 1
-    assert "kubernetes" in warnings[0]
-    assert MINIMAL_K8S_VERSION in warnings[0]
+    assert "kubernetes" in str(warnings[0])
+    assert MINIMAL_K8S_VERSION in str(warnings[0])
 
 
 dependencies = [
diff --git a/tests/unit/module_utils/test_service.py b/tests/unit/module_utils/test_service.py
index 9f8fb730b0..3d7729caf3 100644
--- a/tests/unit/module_utils/test_service.py
+++ b/tests/unit/module_utils/test_service.py
@@ -202,8 +202,8 @@ def test_service_create_resource_warnings(
     result, warnings = svc.create(Mock(), pod_definition)
 
     assert result == mock_pod_resource_instance.to_dict()
-    assert warnings[0] == "test warning 1"
-    assert warnings[1] == "test warning 2"
+    assert str(warnings[0]) == "test warning 1"
+    assert str(warnings[1]) == "test warning 2"
 
 
 def test_service_create_resource_check_mode():
@@ -289,8 +289,8 @@ def test_service_apply_existing_resource_warnings(
     )
 
     assert result == mock_pod_resource_instance.to_dict()
-    assert warnings[0] == "test warning 1"
-    assert warnings[1] == "test warning 2"
+    assert str(warnings[0]) == "test warning 1"
+    assert str(warnings[1]) == "test warning 2"
 
 
 def test_service_replace_existing_resource(