diff --git a/mt_with_external_memory/train.py b/mt_with_external_memory/train.py
index 6dd9187150799507f2160bf9d4ed7a52114fcd42..ecb6d18331f21a7eeec07c78fa856149e2056bfb 100644
--- a/mt_with_external_memory/train.py
+++ b/mt_with_external_memory/train.py
@@ -135,7 +135,7 @@ def train():
                 sys.stdout.flush()
         if isinstance(event, paddle.event.EndPass):
             result = trainer.test(reader=test_batch_reader, feeding=feeding)
-            print "Pass: %d, TestCost: %f, %s" % (event.pass_id, event.cost,
+            print "Pass: %d, TestCost: %f, %s" % (event.pass_id, result.cost,
                                                   result.metrics)
             with gzip.open("checkpoints/params.pass-%d.tar.gz" % event.pass_id,
                            'w') as f: