diff --git a/lib/tls.js b/lib/tls.js
index f13c5c1c860..6f0f21e7620 100644
--- a/lib/tls.js
+++ b/lib/tls.js
@@ -76,7 +76,7 @@ function convertProtocols(protocols) {
   return buff;
 }
 
-exports.convertALPNProtocols = function(protocols, out) {
+exports.convertALPNProtocols = function convertALPNProtocols(protocols, out) {
   // If protocols is Array - translate it into buffer
   if (Array.isArray(protocols)) {
     out.ALPNProtocols = convertProtocols(protocols);