diff --git a/bin/vdn-drone b/bin/vdn-drone
index 477dd57..2c4429d 100755
--- a/bin/vdn-drone
+++ b/bin/vdn-drone
@@ -5,12 +5,6 @@ set -eu
 VDN_PATH=$(readlink -f $(dirname $(command -v vdn))/..)
 . $VDN_PATH/bin/functions.sh
 
-synopsis() {
-  cat << EOF
-Usage : $(basename $0) [-h] [option...]
-EOF
-}
-
 help() {
         cat << EOF
 $(basename $0) exécute une pipeline Drone locale dans VDN.
@@ -35,11 +29,6 @@ Exemple :
 EOF
 }
 
-usage() {
-  synopsis
-  exit 1
-}
-
 for arg; do
   case "$arg" in
     '-h')