diff --git a/tests/conf/test-cookie-prefix.cfg b/tests/conf/test-cookie-prefix.cfg
new file mode 100644
index 0000000..d4d591e
--- /dev/null
+++ b/tests/conf/test-cookie-prefix.cfg
@@ -0,0 +1,35 @@
+# Test configuration. It listens on port 8000, forwards to
+# local ports 8001/8002 as two distinct servers, and relies
+# on a server running on local port 8080 to handle the request.
+
+global
+	maxconn 500
+	stats socket /tmp/sock1 mode 777 level admin
+	stats timeout 1d
+
+defaults
+	mode	http
+	option  http-server-close
+	timeout	client 30s
+	timeout server 30s
+	timeout connect 5s
+
+listen test
+	log 127.0.0.1 local0
+	option httplog
+	bind :8000
+	cookie SID prefix 
+	server s1 127.0.0.1:8001 cookie s1
+	server s2 127.0.0.1:8002 cookie s2
+	capture cookie toto= len 10
+
+listen s1
+	bind 127.0.0.1:8001
+	server srv 127.0.0.1:8080
+	http-request add-header x-haproxy-used s1
+
+listen s2
+	bind 127.0.0.1:8002
+	server srv 127.0.0.1:8080
+	http-request add-header x-haproxy-used s2
+