diff --git a/sort_certificate.py b/sort_certificate.py
index d58769f..7e2c3a8 100755
--- a/sort_certificate.py
+++ b/sort_certificate.py
@@ -1,6 +1,6 @@
 #! /usr/bin/env python
 '''
-Sort X509/RSA key material
+Sort X509/private key material
 '''
 
 from __future__ import print_function