Using Courses and the completion of the task

Summary

An employee has completed the course, howerver the "task" is showing 75% complete

Content

We currently assigned an employee a course using the courses function. He completed the course which should mark that "task" as complete, however it is showing as 75% complete and the employee continues to receive reminders to complete. Within the course the employee see's the status as "complete". Is there a missing step to have this task completed at 100%