When rowing on my Concept 2, I notice that the distance recorded in Strava is often less than the distance actually rowed. 

For example, yesterday I set the distance on my ErgData application to row a 2000m warm-up. When the Concept machine (and the ErgData application) indicate that the row is complete, and stop recording, I continue rowing a few seconds, in case there is a delay in the distance being recorded somewhere. 

When I then check the Concept machine, ErgData and Garmin, they all show the correct distance of 2000m. But, Strava shows 1999m. This discrepancy increases for longer distances rowed.

What is the solution to get Strava to record the correct distance?

Thanks.