Unexpected content type when accessing Soap Service running under Mono (Linux)

Unexpected content type when accessing Soap Service running under Mono
(Linux)

I am working on a project where I am have a MONO soap service running on a
linux server. The service is supposed to be accessible from Android. When
running the service on Windows it works fine without any issues, however,
under Linux I am having an issue.
When I try and access the Mono Soap Service from Android I get an HTTP
Status of 415. In order to find the problem, I am trying to access using
SoapUI I get the following response back.
HTTP/1.1 415 Expected content-type 'text/xml; charset=utf-8' but got
'text/xml;charset=UTF-8'
Notice, the different casing in UTF-8 and no space between
text/xml;charset. But that's the only difference, the actual message is
pretty much the same.
Is there anything I need to do to make it work correctly. Thanks for any
help you can provide.