--- a/src/java.base/share/classes/sun/security/ssl/HKDF.java	Thu Jun 07 07:23:15 2018 +0800
+++ b/src/java.base/share/classes/sun/security/ssl/HKDF.java	Wed Jun 06 23:53:47 2018 -0700
@@ -62,7 +62,7 @@
         Objects.requireNonNull(hashAlg,
                 "Must provide underlying HKDF Digest algorithm.");
         hmacAlg = "Hmac" + hashAlg.replace("-", "");
-        hmacObj = Mac.getInstance(hmacAlg);
+        hmacObj = JsseJce.getMac(hmacAlg);
         hmacLen = hmacObj.getMacLength();
     }