diff --git a/tests/test_s3/test_s3.py b/tests/test_s3/test_s3.py
index b4badcaf0..2193f8b27 100644
--- a/tests/test_s3/test_s3.py
+++ b/tests/test_s3/test_s3.py
@@ -2145,7 +2145,7 @@ def test_boto3_copy_object_from_unversioned_to_versioned_bucket():
 
 @mock_s3
 def test_boto3_copy_object_with_replacement_tagging():
-    client = boto3.client("s3", region_name="eu-north-1")
+    client = boto3.client("s3", region_name=DEFAULT_REGION_NAME)
     client.create_bucket(Bucket="mybucket")
     client.put_object(
         Bucket="mybucket", Key="original", Body=b"test", Tagging="tag=old"