diff --git a/docker-compose.yml b/docker-compose.yml
index b759c32..319d73a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -42,7 +42,9 @@ services:
         condition: service_healthy
     restart: unless-stopped
     networks:
-      - internal
+      internal:
+        aliases:
+          - notesfrais-backend
 
   # ── Frontend nginx ──────────────────────────────────────────
   frontend:
diff --git a/frontend/nginx.conf b/frontend/nginx.conf
index 8f199e1..e4f6248 100644
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@@ -22,7 +22,7 @@ server {
 
     # ── API → backend (service Docker interne) ────────────────
     location /api/ {
-        proxy_pass         http://backend:3001/api/;
+        proxy_pass         http://notesfrais-backend:3001/api/;
         proxy_http_version 1.1;
 
         proxy_set_header Host              $host;