diff --git a/t/unit/test_core.py b/t/unit/test_core.py
index 71e02f9..c4933f6 100644
--- a/t/unit/test_core.py
+++ b/t/unit/test_core.py
@@ -14,7 +14,7 @@
     'aws_access_key_id': 'fake_one',
     'aws_secret_access_key': 'fake_one',
     'aws_session_token': 'fake_one',
-    'region': 'us-east-1'
+    'region_name': 'us-east-1'
 }