--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/Global.java	Wed Jul 05 20:37:12 2017 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/objects/Global.java	Fri Jun 05 12:38:53 2015 +0200
@@ -2712,6 +2712,14 @@
             // Retrieve current state of ENV variables.
             final ScriptObject env = newObject();
             env.putAll(System.getenv(), scriptEnv._strict);
+
+            // Some platforms, e.g., Windows, do not define the PWD environment
+            // variable, so that the $ENV.PWD property needs to be explicitly
+            // set.
+            if (!env.containsKey(ScriptingFunctions.PWD_NAME)) {
+                env.put(ScriptingFunctions.PWD_NAME, System.getProperty("user.dir"), scriptEnv._strict);
+            }
+
             addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, env);
         } else {
             addOwnProperty(ScriptingFunctions.ENV_NAME, Attribute.NOT_ENUMERABLE, UNDEFINED);