--- old/modules/base/src/main/java/javafx/util/Pair.java	2015-11-03 14:04:17.953858800 +0300
+++ new/modules/base/src/main/java/javafx/util/Pair.java	2015-11-03 14:04:17.735846400 +0300
@@ -26,6 +26,7 @@
 package javafx.util;
 
 import java.io.Serializable;
+import java.util.Objects;
 import javafx.beans.NamedArg;
 
  /**
@@ -89,12 +90,7 @@
      */
     @Override
     public int hashCode() {
-        // name's hashCode is multiplied by an arbitrary prime number (13)
-        // in order to make sure there is a difference in the hashCode between
-        // these two parameters:
-        //  name: a  value: aa
-        //  name: aa value: a
-        return key.hashCode() * 13 + (value == null ? 0 : value.hashCode());
+        return Objects.hash(key, value);
     }
 
      /**