diff --git a/lib/server.js b/lib/server.js
index 877d4d2..cf6adbc 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -75,13 +75,12 @@ export function createServer({ base = '/' } = {}) {
     base,
   })
     .get('/style.json', async (request, reader) => {
-      const baseUrl = new URL(base, request.url)
+      const baseUrl = new URL('.', request.url)
       const style = await reader.getStyle(baseUrl.href)
       return json(style)
     })
-    .get('*', async (request, reader) => {
-      const url = new URL(request.url)
-      const path = decodeURIComponent(url.pathname.slice(base.length - 1))
+    .get(':path+', async (request, reader) => {
+      const path = decodeURIComponent(request.params.path)
       const resource = await reader.getResource(path)
       return resourceResponse(resource)
     })
diff --git a/test/server.js b/test/server.js
index a949b14..fb9bd94 100644
--- a/test/server.js
+++ b/test/server.js
@@ -115,3 +115,65 @@ test('server with base path', async () => {
   const style = await response.json()
   assert(validateStyle(style), 'style is valid')
 })
+
+test('server with parameter in base path', async () => {
+  const filepath = fileURLToPath(
+    new URL('./fixtures/demotiles-z2.smp', import.meta.url),
+  )
+  const reader = new Reader(filepath)
+  const server = createServer({ base: '/maps/:mapId/' })
+  const response = await server.fetch(
+    new Request('http://example.com/maps/45b4fcabc49c/style.json'),
+    reader,
+  )
+  assert.equal(response.status, 200)
+  const style = await response.json()
+  assert(validateStyle(style), 'style is valid')
+
+  {
+    assert(typeof style.glyphs === 'string')
+    const glyphUrl = replaceVariables(style.glyphs, {
+      fontstack: 'Open Sans Semibold',
+      range: '0-255',
+    })
+    assert(glyphUrl.startsWith('http://example.com/maps/45b4fcabc49c/'))
+    const response = await server.fetch(new Request(glyphUrl), reader)
+    assert.equal(response.status, 200)
+    assert.equal(response.headers.get('content-type'), 'application/x-protobuf')
+    assert.equal(response.headers.get('content-encoding'), 'gzip')
+    assert(response.headers.get('content-length'))
+
+    assert.equal(
+      (await response.arrayBuffer()).byteLength,
+      Number(response.headers.get('content-length')),
+      'Content-Length header is correct',
+    )
+  }
+
+  {
+    const tileSource = Object.values(style.sources).find(
+      (source) => source.type === 'vector',
+    )
+    assert(tileSource?.tiles)
+    const tileUrl = replaceVariables(tileSource.tiles[0], {
+      z: 0,
+      x: 0,
+      y: 0,
+    })
+    assert(tileUrl.startsWith('http://example.com/maps/45b4fcabc49c/'))
+    const response = await server.fetch(new Request(tileUrl), reader)
+    assert.equal(response.status, 200)
+    assert.equal(
+      response.headers.get('content-type'),
+      'application/vnd.mapbox-vector-tile',
+    )
+    assert.equal(response.headers.get('content-encoding'), 'gzip')
+    assert(response.headers.get('content-length'))
+
+    assert.equal(
+      (await response.arrayBuffer()).byteLength,
+      Number(response.headers.get('content-length')),
+      'Content-Length header is correct',
+    )
+  }
+})