diff --git a/README.md b/README.md
index 4d4e5ae..ca958fc 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ To upload the site:
 
 ```console
 $ gem install aws-sdk
-$ export export AWS_ACCESS_KEY_ID=...
+$ export AWS_ACCESS_KEY_ID=...
 $ export AWS_SECRET_ACCESS_KEY=...
 $ tools/upload-site
 ```