diff --git a/Feistel.h b/Feistel.h
index 38f7efa..7b16689 100644
--- a/Feistel.h
+++ b/Feistel.h
@@ -3,6 +3,8 @@
 #include "Block.h"
 #include "Halfblock.h"
 
+/** Class to perform a feistel block chipher
+*/
 class Feistel
 {
 public: