diff --git a/lib/ulib/pyulib/pyulib b/lib/ulib/pyulib/pyulib
index cbc0ba7..e7efd65 100644
--- a/lib/ulib/pyulib/pyulib
+++ b/lib/ulib/pyulib/pyulib
@@ -38,5 +38,6 @@ export PYTHONPATH="$PYULIBDIR/src${PYTHONPATH:+:$PYTHONPATH}"
 function pyulibsync() {
     # Synchroniser les librairies pyulib dans le répertoire $1
     local destdir="$(abspath "${1:-.}")"
+    local __CPNOVCS_RSYNC_ARGS=(-q --delete)
     [ "$destdir/pyulib" != "$PYULIBDIR" ] && cpdirnovcs "$PYULIBDIR" "$destdir/pyulib"
 }
diff --git a/lib/ulib/ulib b/lib/ulib/ulib
index 1c71654..2791aeb 100644
--- a/lib/ulib/ulib
+++ b/lib/ulib/ulib
@@ -103,5 +103,6 @@ function ulibadd() {
 function ulibsync() {
     # Synchroniser les modules de ulib dans le répertoire $1
     local destdir="$(abspath "${1:-.}")"
+    local __CPNOVCS_RSYNC_ARGS=(-q --delete)
     [ "$destdir/ulib" != "$ULIBDIR" ] && cpdirnovcs "$ULIBDIR" "$destdir/ulib"
 }
diff --git a/lib/ulib/ulibsh b/lib/ulib/ulibsh
index ead33b3..299f5d0 100644
--- a/lib/ulib/ulibsh
+++ b/lib/ulib/ulibsh
@@ -93,6 +93,7 @@ function ulibadd() {
 
 function ulibsync() {
     local destdir="$(abspath "${1:-.}")"
+    local __CPNOVCS_RSYNC_ARGS=(-q --delete)
     [ "$destdir/ulib" != "$ULIBDIR" ] && cpdirnovcs "$ULIBDIR" "$destdir/ulib"
 }
 ##@inc]ulib