From cc604576f08ee5cffb37fb7c91ac8ee24a869faf Mon Sep 17 00:00:00 2001
From: Bernat Romagosa <bromagosa@e-citilab.eu>
Date: Fri, 22 Sep 2017 13:08:02 +0200
Subject: [PATCH] fixes #1860 (var refactor issue)

---
 blocks.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/blocks.js b/blocks.js
index 5d425235..b89031dd 100644
--- a/blocks.js
+++ b/blocks.js
@@ -3216,7 +3216,7 @@ BlockMorph.prototype.refactorThisVar = function (justTheTemplate) {
     // taking care of its lexical scope
 
     var receiver = this.scriptTarget(),
-        oldName = this.blockSpec,
+        oldName = this.instantiationSpec || this.blockSpec,
         cpy = this.fullCopy();
 
     cpy.addShadow();