diff --git a/packages/http/src/latus.js b/packages/http/src/latus.js
index 276e844..db6f003 100644
--- a/packages/http/src/latus.js
+++ b/packages/http/src/latus.js
@@ -41,7 +41,7 @@ const common = async (latus, req) => {
   return instance.webpack();
 };
 
-const varyBy = (req) => (req.user || 0) && req.user.id;
+const varyBy = () => 0;
 
 const vary = (latus, fn) => {
   // eslint-disable-next-line no-param-reassign
@@ -86,38 +86,25 @@ const production = (latus) => vary(
     };
     config.output.path = `${config.context}/build/assets`;
     const compiler = webpack(config);
-    let hasRun = false;
-    return (req, res, next) => {
-      if (hasRun) {
-        next();
-        return;
-      }
+    const promise = new Promise((resolve, reject) => {
       compiler.run((error, stats) => {
         if (error) {
-          next(error);
+          reject(error);
           return;
         }
-        res.setHeader('Content-Type', 'application/javascript; charset=UTF-8');
         if (stats.hasErrors()) {
-          const renderedStats = stats.toString({
+          reject(new Error(stats.toString({
             all: false,
             errors: true,
-          }).replace(new RegExp(process.cwd(), 'g'), '<cwd>');
-          // eslint-disable-next-line no-console
-          console.error(renderedStats);
-          res.send([
-            'window.addEventListener("load", () => {',
-            "window.document.body.innerHTML = '<pre>' + ",
-            `decodeURIComponent("${encodeURIComponent(renderedStats)}")`,
-            " + '</pre>';",
-            '});',
-          ].join(''));
+          }).replace(new RegExp(process.cwd(), 'g'), '&lt;cwd&gt;')));
         }
         else {
-          hasRun = true;
-          next();
+          resolve();
         }
       });
+    });
+    return (req, res, next) => {
+      promise.then(next).catch(next);
     };
   },
 );
diff --git a/packages/http/src/server.js b/packages/http/src/server.js
index b22bff5..e8ef338 100644
--- a/packages/http/src/server.js
+++ b/packages/http/src/server.js
@@ -74,6 +74,7 @@ export const createHttpServer = async (latus) => {
   else {
     app.use(express.static(join(__dirname, 'client')));
     app.get('*', async (req, res) => {
+      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
       const stream = createReadStream(join(__dirname, 'client', 'index.html'));
       stream.pipe(res);
     });