diff --git a/dev/setup/nginx/setup_nginx.py b/dev/setup/nginx/setup_nginx.py
index 57d4fe1b2b5..d1c5e71ab24 100644
--- a/dev/setup/nginx/setup_nginx.py
+++ b/dev/setup/nginx/setup_nginx.py
@@ -7,7 +7,7 @@ if os.path.exists(filepath):
     if 'location ^~ /dolibarrbeta' not in content:
         idx = content.find('location / {')
         if idx != -1:
-            block = """location ^~ /dolibarrbeta {
+            block = r"""location ^~ /dolibarrbeta {
         alias /home/ubuntu/dolibarrbeta/htdocs;
         index index.php;
         try_files $uri $uri/ /dolibarrbeta/index.php?$args;