Hi, I tried to filter only 'machine' images, but when I did: ap @ec2.describe_images([], 'machine') I got: ##### Aws::Ec2 returned an error: 400 Bad Request <?xml version="1.0" encoding="UTF-8"?> <Response><Errors><Error><Code>UnknownParameter</Code><Message>The parameter ImageType is not recognized</Message></Error></Errors><RequestID>15d5b5ac-d58d-464a-b03c-302ea46383d5</RequestID></Response> ##### ##### Aws::Ec2 request: ec2.amazonaws.com:443/?AWSAccessKeyId=XXXX&Action=DescribeImages&ImageType=machine&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2010-11-10T12%3A14%3A00.000Z&Version=2010-08-31&Signature=XXXX