diff --git a/kobo/reboot_watcher.sh b/kobo/reboot_watcher.sh
index 38e05af..5cc80d4 100755
--- a/kobo/reboot_watcher.sh
+++ b/kobo/reboot_watcher.sh
@@ -14,9 +14,7 @@ echo "[watcher] triple-tap reboot actif" >> "$LOG"; sync
 
 count=0
 last=0
-"$FT" 2>&1 | while read -r line; do
-    # DEBUG (à retirer après calage) : voir le format réel de finger_trace.
-    echo "[ft] $line" >> "$LOG"
+"$FT" 2>/dev/null | while read -r line; do
     case "$line" in
         *UP*|*RELEASE*|*Release*)
             now=$(date +%s)