diff --git a/tests/test_kms/test_kms.py b/tests/test_kms/test_kms.py
index ab7513b4d..0dc93b252 100644
--- a/tests/test_kms/test_kms.py
+++ b/tests/test_kms/test_kms.py
@@ -623,7 +623,7 @@ def test_kms_encrypt_boto3():
 
 @mock_kms
 def test_disable_key():
-    client = boto3.client('kms')
+    client = boto3.client('kms', region_name='us-east-1')
     key = client.create_key(Description='disable-key')
     client.disable_key(
         KeyId=key['KeyMetadata']['KeyId']
@@ -636,7 +636,7 @@ def test_disable_key():
 
 @mock_kms
 def test_enable_key():
-    client = boto3.client('kms')
+    client = boto3.client('kms', region_name='us-east-1')
     key = client.create_key(Description='enable-key')
     client.disable_key(
         KeyId=key['KeyMetadata']['KeyId']
@@ -652,7 +652,7 @@ def test_enable_key():
 
 @mock_kms
 def test_schedule_key_deletion():
-    client = boto3.client('kms')
+    client = boto3.client('kms', region_name='us-east-1')
     key = client.create_key(Description='schedule-key-deletion')
     with freeze_time("2015-01-01 12:00:00"):
         response = client.schedule_key_deletion(
@@ -669,7 +669,7 @@ def test_schedule_key_deletion():
 
 @mock_kms
 def test_schedule_key_deletion_custom():
-    client = boto3.client('kms')
+    client = boto3.client('kms', region_name='us-east-1')
     key = client.create_key(Description='schedule-key-deletion')
     with freeze_time("2015-01-01 12:00:00"):
         response = client.schedule_key_deletion(
@@ -687,7 +687,7 @@ def test_schedule_key_deletion_custom():
 
 @mock_kms
 def test_cancel_key_deletion():
-    client = boto3.client('kms')
+    client = boto3.client('kms', region_name='us-east-1')
     key = client.create_key(Description='cancel-key-deletion')
     client.schedule_key_deletion(
         KeyId=key['KeyMetadata']['KeyId']