exim mainlog - Berkeley DB error message

Hello,

for every sent and received email there is 2x identical entries in exim mainlog:
**
Berkeley DB error: /var/spool/exim/db/retry: file size not a multiple of the pagesize
**

However, this doesn't seem to affect emails, as all entries have completed statement.

But it drives me crazy, as I can't find any clues on google as to what this error means, and how to fix it.

I would really appreciate any help on this matter.

Thank you.

Exim version 4.90_1
exim.conf version 2.1.2
exim.pl version 17

In case someone will stumble on same problem, my solution was to delete all the files in the /var/spool/exim/db directory, and let Exim recreate them.