diff --git a/cloud/amazon/ec2.py b/cloud/amazon/ec2.py
index b79395fb3a1..840cf4fed1f 100644
--- a/cloud/amazon/ec2.py
+++ b/cloud/amazon/ec2.py
@@ -701,7 +701,7 @@ def create_block_device(module, ec2, volume):
                            volume_type=volume.get('device_type'),
                            delete_on_termination=volume.get('delete_on_termination', False),
                            iops=volume.get('iops'),
-                           encrypted=volume.get('encrypted', False))
+                           encrypted=volume.get('encrypted', None))
 
 def boto_supports_param_in_spot_request(ec2, param):
     """