diff --git a/tools/build_release.sh b/tools/build_release.sh
index bd7dca38..a3645b63 100644
--- a/tools/build_release.sh
+++ b/tools/build_release.sh
@@ -92,11 +92,7 @@ fi
 #  nginx:
 mkdir -p "$slash"/etc/nginx/sites-available || die "can't mkdir nginx config"
 cp -p "$SCODOC_DIR"/tools/etc/scodoc9.nginx "$slash"/etc/nginx/sites-available/scodoc9.nginx.distrib || die "can't copy nginx config"
-# Evite d'écraser: il faudrait ici présenter un dialogue "fichier local modifié, ..."
-if [ ! -e "$slash"/etc/nginx/sites-available/scodoc9.nginx ]
-then
-  cp -p "$SCODOC_DIR"/tools/etc/scodoc9.nginx "$slash"/etc/nginx/sites-available/ || die "can't copy nginx config"
-fi
+
 #  systemd
 mkdir -p "$slash"/etc/systemd/system/ || die "can't mkdir systemd config"
 cp -p "$SCODOC_DIR"/tools/etc/scodoc9.service "$slash"/etc/systemd/system/ || die "can't copy scodoc9.service"
diff --git a/tools/debian/postinst b/tools/debian/postinst
index 412c298a..3332779f 100755
--- a/tools/debian/postinst
+++ b/tools/debian/postinst
@@ -80,6 +80,11 @@ su -c "(cd $SCODOC_DIR && python3 -m venv venv)" "$SCODOC_USER" || die "Error cr
 su -c "(cd $SCODOC_DIR && source venv/bin/activate && pip install wheel && pip install -r requirements-3.9.txt)" "$SCODOC_USER" || die "Error installing python packages"
 
 # --- NGINX
+# Evite d'écraser: il faudrait ici présenter un dialogue "fichier local modifié, ..."
+if [ ! -e /etc/nginx/sites-available/scodoc9.nginx ]
+then
+  cp -p /etc/nginx/sites-available/scodoc9.nginx.distrib /etc/nginx/sites-available/scodoc9.nginx  || die "can't copy nginx config"
+fi
 if [ ! -L /etc/nginx/sites-enabled/scodoc9.nginx ]
 then
     echo "Enabling scodoc9 in nginx"