From c08635898f3a57cdf19c45f12b1aac28d864c73e Mon Sep 17 00:00:00 2001
From: dzhwinter <dzhwinter@gmail.com>
Date: Sun, 1 Oct 2017 08:36:04 +0000
Subject: [PATCH] fix typo

---
 paddle/framework/backward.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddle/framework/backward.cc b/paddle/framework/backward.cc
index c625c0caf7d..b8509390400 100644
--- a/paddle/framework/backward.cc
+++ b/paddle/framework/backward.cc
@@ -161,7 +161,7 @@ static std::unique_ptr<OperatorBase> BackwardRecursive(
             insert_add_out = name;
           }
           if (output_idx != 0) {
-            insert_add_y = name + "@SHARED@" + std::to_string(output_idx);
+            insert_add_y = name + "@SHARED@" + std::to_string(output_idx-1);
           }
           insert_position.push_back(
               {dup_op.back(),
-- 
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