diff --git a/docker_assets/nginx.conf b/docker_assets/nginx.conf
index ee2841ab..75014784 100644
--- a/docker_assets/nginx.conf
+++ b/docker_assets/nginx.conf
@@ -57,14 +57,13 @@ server {
     location = /index.html {
         add_header Cache-Control "no-store, no-cache, must-revalidate";
         add_header Pragma "no-cache";
-        add_header Expires 0;
         expires 0;
     }
 
     location / {
         add_header Cache-Control "no-store, no-cache, must-revalidate";
         add_header Pragma "no-cache";
-        add_header Expires 0;
+        expires 0;
         try_files $uri $uri/ /index.html =404;
     }
 }