Microsoft has swiftly fixed an embarrassing gaffe which saw a chunk of code labelled "big boobs".
The hexadecimal string 0xB16B00B5 was discovered lurking in code that helps a Microsoft program work with Linux open source software.
The controversial string came to light on a mailing list for developers who oversee the core, or kernel, of Linux.
The string was used every time the Microsoft program ran a virtual version of Linux.
Kernel hacker Paolo Bonzini posted a message about the string on the Linux Kernel mailing list saying "Somone (sic) was trying to be funny, I guess".
Microsoft was alerted to the mistake and swiftly issued a statement.
Read more: http://www.bbc.co.uk/news/technology-18922629