diff --git a/README.markdown b/README.markdown
index 00937c0..3bb75d6 100644
--- a/README.markdown
+++ b/README.markdown
@@ -38,6 +38,9 @@ Eg: `curl ... | NVM_DIR="path/to/nvm" bash`
 
 <sub>*NB. The installer can use `git`, `curl`, or `wget` to download `nvm`, whatever is available.*</sub>
 
+optional: in case you're getting `nvm: command not found` error, you can activate nvm by sourcing it from your shell:
+`. ~/.nvm/nvm.sh`
+
 ### Manual install
 
 For manual install create a folder somewhere in your filesystem with the `nvm.sh` file inside it. I put mine in `~/.nvm`.