Updates instructions for generating RSA key with latest OpenSSL
diff --git a/guide/locations/_ssh-keys.md b/guide/locations/_ssh-keys.md
index ef4091a..d087922 100644
--- a/guide/locations/_ssh-keys.md
+++ b/guide/locations/_ssh-keys.md
@@ -23,7 +23,16 @@
If you don't have an SSH key, create one with:
```bash
-$ ssh-keygen -t rsa -N "" -f ~/.ssh/id_rsa
+$ ssh-keygen -t rsa -N "" -m PEM -f ~/.ssh/id_rsa
+```
+
+**Note:** For previous versions of OpenSSL, the `-m PEM` flag is not necessary.
+However, for newer versions of OpenSSL, if the `-m PEM` flag is omitted, the
+key produced will be in OPENSSL format, not RSA format. To determine if a key
+is in the correct format, `cat` the key and the first line should read as follows:
+
+```bash
+-----BEGIN RSA PRIVATE KEY-----
```
