diff --git a/README.md b/README.md
index 3809392..b37e0fa 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Installation
 In order to use this platform repository you must follow a few steps:
 
 - clone [this very git repository](https://github.com/icekernel/example-ops/)
+  - Specify permission for keys - `chmod 600 [example-ops-directory]/keys/vagrant*`
 - install aws cli
 - install the platform’s vault password in `~/.ansible/example-vault
   (`touch ~/.ansible/example-vault` will do for now)