diff --git a/src/daemon/group.js b/src/daemon/group.js
index d2d60d9d..e4c9540b 100644
--- a/src/daemon/group.js
+++ b/src/daemon/group.js
@@ -365,8 +365,9 @@ class Group extends EventEmitter {
         } else if (item.start) {
           target = `ws://127.0.0.1:${item.env.PORT}`
         } else {
-          const { hostname } = url.parse(item.target)
-          target = `ws://${hostname}`
+          const { hostname, port } = url.parse(item.target)
+          const targetPort = port || 80
+          target = `ws://${hostname}:${targetPort}`
         }
         log(`WebSocket - ${host} → ${target}`)
         this._proxy.ws(req, socket, head, { target }, err => {
diff --git a/test/daemon/group.js b/test/daemon/group.js
index b0517679..d682cf7c 100644
--- a/test/daemon/group.js
+++ b/test/daemon/group.js
@@ -36,7 +36,7 @@ test('group.handleUpgrade with proxy', t => {
   group.handleUpgrade(req, head, socket)
 
   sinon.assert.calledWith(group._proxy.ws, req, head, socket, {
-    target: `ws://${target}`
+    target: `ws://${target}:80`
   })
   t.pass()
 })