diff --git a/lib/internal/crypto/diffiehellman.js b/lib/internal/crypto/diffiehellman.js
index 71fd13819c62cf..8466df2f79cf60 100644
--- a/lib/internal/crypto/diffiehellman.js
+++ b/lib/internal/crypto/diffiehellman.js
@@ -191,8 +191,6 @@ ECDH.prototype.generateKeys = function generateKeys(encoding, format) {
 ECDH.prototype.getPublicKey = function getPublicKey(encoding, format) {
   var f;
   if (format) {
-    if (typeof format === 'number')
-      f = format;
     if (format === 'compressed')
       f = POINT_CONVERSION_COMPRESSED;
     else if (format === 'hybrid')