The defendant in the case was convicted and sentenced in the South Savo District Court on Tuesday on charges of the aggravated sexual abuse of a minor over an eight-year period.
At the time of the repeated offenses, the child victim was between the ages of 5-13.
According to the court, the abuse involved touching the child's intimate areas and acts classed under law as sexual intercourse.
In addition to the prison sentence, the defendant was ordered to pay the victim damages totaling 14,000 euros.
The court ordered that the transcripts of the trial proceedings remain sealed until 2079.