diff --git a/app/bin/home/Backup b/app/bin/home/Backup
index 31ad952..4f91c1b 100755
--- a/app/bin/home/Backup
+++ b/app/bin/home/Backup
@@ -40,7 +40,7 @@ cd -
 
 # Backup docker.
 docker=$(archive_fast docker/)
-bupsize=$(/usr/bin/env du -h ${docker} | awk '{print $1}')
+bupsize=$(tdu ${docker} | awk '{print $1}')
 mv ${docker} ${path_docker}/ || report "Backup : Failed to save docker!"
 
 # Backup some media.