diff --git a/index.js b/index.js
index eb0793e..dff0403 100644
--- a/index.js
+++ b/index.js
@@ -26,6 +26,6 @@ module.exports = async function (fastify, opts) {
 
   function reply (request, reply) {
     var dest = request.req.url.replace(this.basePath, '')
-    reply.from(dest)
+    reply.from(dest || '/')
   }
 }
diff --git a/test.js b/test.js
index 245f786..211a59e 100644
--- a/test.js
+++ b/test.js
@@ -68,6 +68,9 @@ async function run () {
     const resultRoot = await got(`http://localhost:${server.server.address().port}/my-prefix/`)
     t.equal(resultRoot.body, 'this is root')
 
+    const withoutSlash = await got(`http://localhost:${server.server.address().port}/my-prefix`)
+    t.equal(withoutSlash.body, 'this is root')
+
     const resultA = await got(`http://localhost:${server.server.address().port}/my-prefix/a`)
     t.equal(resultA.body, 'this is a')
   })