diff --git a/tests/test_awslambda/test_lambda.py b/tests/test_awslambda/test_lambda.py
index 446856f60..4f587cdd8 100644
--- a/tests/test_awslambda/test_lambda.py
+++ b/tests/test_awslambda/test_lambda.py
@@ -153,7 +153,7 @@ def test_invoke_event_function():
 
 @mock_lambda
 def test_invoke_dryrun_function():
-    conn = boto3.client("lambda", "us-west-2")
+    conn = boto3.client("lambda", _lambda_region)
     conn.create_function(
         FunctionName="testFunction",
         Runtime="python2.7",