Mistake in entering answer key

I made an error while entering the answer key for puzzle number 13 Double choco. The error is only in the 1st digit and rest all digits are correct.

Instead of a 1, I entered a 2 in the answer key. I usually start putting digits for the answer key in the circles as soon as I get them and while entering the first digit I entered the area of the complete region(both the shaded and white cells). For the remaining digits I entered them correctly.

Pls let me know if this is considerable.

Thanks.