diff --git a/conf/backup_method.j2 b/conf/backup_method.j2
index 7eef826..74d6e63 100644
--- a/conf/backup_method.j2
+++ b/conf/backup_method.j2
@@ -14,6 +14,11 @@ do_need_mount() {
     true
 }
 
+LOGFILE=/var/log/backup_borg.err
+log_with_timestamp() {
+  sed -e "s/^/[$(date +"%Y-%m-%d_%H:%M:%S")] /" >> $LOGFILE
+}
+
 do_backup() {
     
     export BORG_PASSPHRASE
@@ -23,12 +28,10 @@ do_backup() {
     repo=$3
     size=$4
     description=$5
-    LOGFILE=/var/log/backup_borg.log
-    ERRFILE=/var/log/backup_borg.err
     current_date=$(date +"%d_%m_%y_%H:%M")
     pushd $work_dir
     set +e
-    if borg init -e repokey $repo >> $LOGFILE 2>> $ERRFILE; then
+    if borg init -e repokey $repo 2>&1 >/dev/null | log_with_timestamp; then
 	    #human_size=`echo $size | awk '{ suffix=" KMGT"; for(i=1; $1>1024 && i < length(suffix); i++) $1/=1024; print int($1) substr(suffix, i, 1), $3; }'`
 	    # Speed in Kbps
 	    #speed=1000
@@ -41,10 +44,10 @@ This is an automated message from your beloved YunoHost server." | /usr/bin/mail
     fi
     set -e
 
-    borg create $repo::${name}_${current_date} ./ >> $LOGFILE 2>> $ERRFILE
+    borg create $repo::${name}_${current_date} ./ 2>&1 >/dev/null | log_with_timestamp
     popd
 
-    borg prune $repo -P ${name} --keep-hourly 2 --keep-daily=7 --keep-weekly=8 --keep-monthly=12 >> $LOGFILE 2>> $ERRFILE
+    borg prune $repo -P ${name} --keep-hourly 2 --keep-daily=7 --keep-weekly=8 --keep-monthly=12 2>&1 >/dev/null | log_with_timestamp
 }
 
 do_mount() {
@@ -55,9 +58,7 @@ do_mount() {
     repo=$3
     size=$4
     description=$5
-    LOGFILE=/var/log/backup_borg.log
-    ERRFILE=/var/log/backup_borg.err
-    borg mount $repo::$name $work_dir >> $LOGFILE 2>> $ERRFILE
+    borg mount $repo::$name $work_dir 2>&1 >/dev/null | log_with_timestamp
 }
 
 work_dir=$2