1 files changed, 1 insertions, 1 deletions
diff --git a/mga-treasurer b/mga-treasurer
index bc06e3c..1efe831 100755
--- a/mga-treasurer
+++ b/mga-treasurer
@@ -68,7 +68,7 @@ sub donations_infos {
     );
     foreach my $don (@{$res{donations}}) {
         my $dt = DateTime->from_epoch(epoch => $don->{date});
-        my $month = $dt->year . '-' . $dt->month;
+        my $month = $dt->year . '-' . sprintf("%02d", $dt->month);
         my $year = $dt->year;
         push @{$res{by_month}->{$month}->{donations}}, $don;
         $res{by_month}->{$month}->{year} = $year;