diff --git a/README.cn.md b/README.cn.md
index 5ced6f86e76e00ad3aea81454d4302db92583760..5da482d5943664a9bc4920e890c9c113f5d12e6f 100644
--- a/README.cn.md
+++ b/README.cn.md
@@ -75,7 +75,7 @@ import random
 from visualdl import LogWriter
 
 logdir = "./tmp"
-logger = LogWriter(dir, sync_cycle=10)
+logger = LogWriter(logdir, sync_cycle=10)
 
 # mark the components with 'train' label.
 with logger.mode("train"):
diff --git a/README.md b/README.md
index f6d808186b7a42553442223072aa18b538e7c760..14295259993f60a674d841085a94bcf6098264d0 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ import random
 from visualdl import LogWriter
 
 logdir = "./tmp"
-logger = LogWriter(dir, sync_cycle=10)
+logger = LogWriter(logdir, sync_cycle=10)
 
 # mark the components with 'train' label.
 with logger.mode("train"):