diff --git a/lib/net.js b/lib/net.js
index c1de0384ea42a9..f32af94fbf94e1 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -1569,14 +1569,10 @@ Server.prototype.unref = function() {
 exports.isIP = cares.isIP;
 
 
-exports.isIPv4 = function(input) {
-  return cares.isIPv4(input);
-};
+exports.isIPv4 = cares.isIPv4;
 
 
-exports.isIPv6 = function(input) {
-  return cares.isIPv6(input);
-};
+exports.isIPv6 = cares.isIPv6;
 
 
 if (process.platform === 'win32') {