Spanish accent in email address - Amazon SES

I'm using Node to send emails using Amazon SES.

I recently came across an error while sending an email to an email address containing a Spanish character (more specifically - Ã).

{"message":"Local address contains control or whitespace","code":"InvalidParameterValue","time":"2015-08-07T14:54:53.435Z","statusCode":400,"retryable":false,"retryDelay":30}

I'm not sure if SES accepts email address with these characters.

Has anyone come across this issue before?