diff --git a/default.conf b/default.conf
index 17b399d..7be676a 100644
--- a/default.conf
+++ b/default.conf
@@ -117,7 +117,7 @@ server {
     add_header Access-Control-Allow-Origin $http_origin always;
     add_header Access-Control-Allow-Credentials true always;
     add_header Access-Control-Allow-Headers content-type,x-sessionkey always;
-    add_header Access-Control-Expose-Headers x-sessionkey always;
+    add_header Access-Control-Expose-Headers X-Sessionkey always;
     add_header Access-Control-Allow-Methods OPTIONS,GET,POST,PATCH,PUT,DELETE;
     proxy_pass http://10.6.0.23:1490/;
   }