diff --git a/lib/repl.js b/lib/repl.js
index a8d8f2686c..b35afac769 100644
--- a/lib/repl.js
+++ b/lib/repl.js
@@ -41,6 +41,7 @@ function readline (cmd) {
       // Scope the readline with exports.scope to provide "local" vars
       with (exports.scope) {
         var ret = eval(buffered_cmd);
+        exports.scope['_'] = ret;
         printValue(ret);
       }