diff --git a/How-to-config-https-proxy.md b/How-to-config-https-proxy.md
index 84cd9e4..a00dca7 100644
--- a/How-to-config-https-proxy.md
+++ b/How-to-config-https-proxy.md
@@ -3,7 +3,8 @@ After configuring rootCA, AnyProxy could help to decrypt https requests, whose a
 Here is the guide to config your https proxy and using it to intercept your https requests. If you don't what to deal with https requests, i.e. just let them go as normal, you don't have to do any configuration.
 
 #### step 1 - install openssl
-* openssl is availabe here : [http://wiki.openssl.org/index.php/Compilation_and_Installation](http://wiki.openssl.org/index.php/Compilation_and_Installation) 
+* openssl is pre-installed in OSX. Just skip this step if you are using OSX.
+* fetch openssl here : [http://wiki.openssl.org/index.php/Compilation_and_Installation](http://wiki.openssl.org/index.php/Compilation_and_Installation) 
 * using ``openssl version -a `` to make sure it is accessible via you command line.
 
 #### step 2 - generate a rootCA and trust it