diff --git a/conf/nginx.conf b/conf/nginx.conf
index 5614de6..7683fe8 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -5,7 +5,7 @@ set $api_domain "__DOMAIN__";
 set $files_domain "__DOMAIN__";
 ssl_ecdh_curve secp384r1;
 more_set_headers "Access-Control-Allow-Origin: '${allowed_origins}'";
-more_set_headers "'Access-Control-Allow-Credentials' true";
+more_set_headers "Access-Control-Allow-Credentials: true";
 more_set_headers "Cross-Origin-Resource-Policy: cross-origin";
 more_set_headers "Cross-Origin-Embedder-Policy: require-corp";
 root __INSTALL_DIR__/;
@@ -74,7 +74,7 @@ location ~ ^/api/.*$ {
 location ~ ^/(blob|block)/.*$ {
     if ($request_method = 'OPTIONS') {
         more_set_headers "Access-Control-Allow-Origin: ${allowed_origins}";
-        more_set_headers "'Access-Control-Allow-Credentials' true";
+        more_set_headers "Access-Control-Allow-Credentials: true";
         more_set_headers "Access-Control-Allow-Methods: 'GET, POST, OPTIONS'";
         more_set_headers "Access-Control-Allow-Headers: DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range";
         more_set_headers "Access-Control-Max-Age: 1728000";