diff --git a/README.md b/README.md
index a7abb45..b179485 100644
--- a/README.md
+++ b/README.md
@@ -104,7 +104,7 @@ where:
         K[N] = PREV 
         PREV = NEXT
         K[N] = KBOX[K[N] xor B]
-      done
+      endfor
     endfunc    
 
 where: