diff --git a/Readme.md b/Readme.md
index bf9ed7d..b9224ae 100644
--- a/Readme.md
+++ b/Readme.md
@@ -62,6 +62,14 @@ app.get('/headers', function(req, res) {
   ], true)
 })
 
+// Add custom name
+app.get('/filename', function(req, res) {
+  res.csv([
+    {"a": 1, "b": 2, "c": 3},
+    {"a": 4, "b": 5, "c": 6}
+  ], true, undefined, undefined, 'custom-file-name.csv')
+})
+
 // Add response headers and status code (will throw a 500 error code)
 app.get('/all-params', function(req, res) {
   res.csv([
@@ -69,7 +77,7 @@ app.get('/all-params', function(req, res) {
     {"a": 4, "b": 5, "c": 6}
   ], true, {
     "Access-Control-Allow-Origin": "*"
-  }, 500)
+  }, 500, 'custom-name.csv')
 })
 
 app.listen(3000)
diff --git a/lib/csv-express.js b/lib/csv-express.js
index 0e0e3e5..71711ad 100644
--- a/lib/csv-express.js
+++ b/lib/csv-express.js
@@ -59,13 +59,16 @@ function escape(field) {
   {status} - Optional status code
  */
 
-res.csv = function(data, csvHeaders, headers, status) {
+res.csv = function(data, csvHeaders, headers, status, fileName) {
   var body = '';
   var headerRow = [];
   var statusCodeSet = true
 
   this.charset = this.charset || 'utf-8';
   this.header('Content-Type', 'text/csv');
+  if (fileName) {
+    this.header('Content-disposition', `attachment; filename=${fileName}`)
+  }
 
   // Set custom headers
   if (headers && headers instanceof Object) {