diff --git a/backups/mastodon_db_backup.sh b/backups/mastodon_db_backup.sh
index 3de43e79344099b7be7c6231c27d8ec61990bc31..ddb4fc41e4f5bb6bb70b5f09268cc821ad49dd15 100644
--- a/backups/mastodon_db_backup.sh
+++ b/backups/mastodon_db_backup.sh
@@ -21,7 +21,7 @@ backup() {
   rm -f $(readlink -f "$backupdir/$link")
 
   # create new backup file
-  docker exec pg_dumpall -U postgres -c -v | gzip >"$backupdir/$file"
+  docker exec -it "$cname" pg_dumpall -U postgres -c -v | gzip >"$backupdir/$file"
   status=$?
 
   # link the sequence number to it