diff --git a/root/usr/share/qpsmtpd/plugins/logging/log2sql b/root/usr/share/qpsmtpd/plugins/logging/log2sql
index 24d1241..2101d81 100644
--- a/root/usr/share/qpsmtpd/plugins/logging/log2sql
+++ b/root/usr/share/qpsmtpd/plugins/logging/log2sql
@@ -69,6 +69,7 @@ $mail_id = $dbh->quote($mail_id);
 
 my ($sec,$min,$hour,$day,$mon,$year) = localtime;
 $year += 1900;
+$mon += 1;
 
 my($statement) = "INSERT INTO ".$mail_table." (mail_id,".
                  $mail_table.".date_day,".