diff --git a/plugins/modules/openssl_privatekey.py b/plugins/modules/openssl_privatekey.py
index 017f8cba..b364a754 100644
--- a/plugins/modules/openssl_privatekey.py
+++ b/plugins/modules/openssl_privatekey.py
@@ -14,6 +14,7 @@ module: openssl_privatekey
 short_description: Generate OpenSSL private keys
 description:
     - This module allows one to (re)generate OpenSSL private keys.
+    - The default mode for the private key file will be C(0600) if I(mode) is not explicitly set.
 author:
     - Yanis Guenane (@Spredzy)
     - Felix Fontein (@felixfontein)