diff --git a/backend/src/main.cpp b/backend/src/main.cpp
index 2f55a20..a9bf69b 100644
--- a/backend/src/main.cpp
+++ b/backend/src/main.cpp
@@ -31,7 +31,7 @@ void default_handler(const drogon::HttpRequestPtr& req, std::function<void(const
         cbk(drogon::HttpResponse::newNotFoundResponse());
     } else {
         if (dev_mode) cbk(drogon::HttpResponse::newFileResponse("./static/index.html"));
-        else cbk(drogon::HttpResponse::newFileResponse((unsigned char*)index_html.data(), index_html.size()));
+        else cbk(drogon::HttpResponse::newFileResponse((unsigned char*)index_html.data(), index_html.size(), "", drogon::CT_TEXT_HTML));
     }
 }