A Muslim man with extremist literature on his computer was jailed for a year today.
An Old Bailey judge agreed the material was old and had not been accessed since Umran Javed served a jail sentence for inciting murder during a protest march.
But Mr Justice Fulford said the two documents contained extremist views and encouragement for terrorism.
Javed, 33, of Derby, pleaded guilty to three offences of possessing material likely to be useful in terrorism.
He is likely to be free in around six weeks because of time served while he was remanded in custody.
He was jailed in 2007 to six years, reduced to four on appeal, for encouraging bombing of the US and Denmark during a march against the publication of cartoon depicting the prophet Mohammed.
Whilst on parole, police found two illegal files on his laptop and computer hard drive.
The material was entitled Zaad-e-Mujahid and Incitement Of The Heroic Mujahadin In Reviving The Tradition Of Assassination.
Javed was said to have had the files in his electronic library seized by police after his first arrest in 2006.
It was returned to him on his release in 2009 and had not been viewed until the police check, said Hossein Zahir, defending.
Mr Justice Fulford said he accepted Javed was a "significantly different man" now with more balanced views.
He said the material was "likely to remain unread and unused by anyone".
Javed had set up his web design business on leaving prison and did voluntary work, including in the multi-faith centre at Derby university.