diff --git a/server/route.js b/server/route.js
index f3a50dfc..787bab4a 100644
--- a/server/route.js
+++ b/server/route.js
@@ -94,8 +94,10 @@ async function route({config, options, request, response}) {
         }));
     }
     
+    const {contentLength} = stream;
+    
+    response.setHeader('Content-Length', contentLength);
     response.setHeader('Content-Type', contentType(extname(fullPath)));
-    //response.setHeader('Content-Length', contentLength);
     
     await pipe([
         stream,