diff --git a/README.md b/README.md
index 077961c..8ac4fe0 100644
--- a/README.md
+++ b/README.md
@@ -46,8 +46,7 @@ If compared to saving websites with `wget -mpk`, this tool embeds all assets as
  - `-u`: Specify custom User-Agent
 
 ## HTTPS and HTTP proxies
-
-Please set `$https_proxy` and `$http_proxy` environment variables.
+Please set `https_proxy` and `http_proxy` environment variables.
 
 ## Related projects
  - `Pagesaver`: https://github.com/distributed-mind/pagesaver