diff --git a/Readme.md b/Readme.md
index 4aa3be9..68d3221 100644
--- a/Readme.md
+++ b/Readme.md
@@ -42,7 +42,8 @@ Gotta figure this out to always stay under the goals
 
 ---
 ## Tester
-- add valgrind to tester
+#### Todo
+- test "-" as argument
 - check for -Wall -Werror -Wextra
 
 #### Usage