diff --git a/key.pem b/key.pem
index bbfa5e8..7239e1f 100644
--- a/key.pem
+++ b/key.pem
@@ -1,3 +1,7 @@
+# DO NOT USE THIS OUTSIDE OF THIS EXAMPLE.
+# Yes, this file is purposely checked in to Git. It is a self-signed cert used for demonstration purposes.
+# There's even a generate_cert.sh script included if you need to generate your own so no excuses!
+
 -----BEGIN PRIVATE KEY-----
 MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQDLuPHOCMEdaTuz
 dB9Q9TxRToL3kbS2bu75PIhI7IwH/gw/AhqWfQXldfw+HDJp+UNm6ct1KcCIlHrs