diff --git a/lib/application.js b/lib/application.js
index 6849d73fd..dc3a407a8 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -41,8 +41,8 @@ module.exports = class Application extends Emitter {
     * @param {string[]} [options.keys] Signed cookie keys
     * @param {boolean} [options.proxy] Trust proxy headers
     * @param {number} [options.subdomainOffset] Subdomain offset
-    * @param {boolean} [options.proxyIpHeader] proxy ip header, default to X-Forwarded-For
-    * @param {boolean} [options.maxIpsCount] max ips read from proxy ip header, default to 0 (means infinity)
+    * @param {string} [options.proxyIpHeader] Proxy IP header, defaults to X-Forwarded-For
+    * @param {number} [options.maxIpsCount] Max IPs read from proxy IP header, default to 0 (means infinity)
     *
     */