diff --git a/default.conf b/default.conf
index d132cd9..d421a20 100644
--- a/default.conf
+++ b/default.conf
@@ -138,7 +138,7 @@ server {
     if ($request_method = OPTIONS) {
     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-Allow-Headers content-type,x-sessionkey,device,browser,os,devicetype always;
     add_header Access-Control-Expose-Headers x-sessionkey always;
     add_header Access-Control-Allow-Methods OPTIONS,GET,POST,PATCH,PUT,DELETE;
       return 200;
@@ -146,7 +146,7 @@ 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-Allow-Headers content-type,x-sessionkey,device,browser,os,devicetype 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/;