diff --git a/README.md b/README.md
index ddc0af1..692905c 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,5 @@
 A simple bit of code in multiple languages that lets you calculate useful statistics without storing every sample.
 
 Look in cpp/ for a C++ version. More to come.
+
+__THE MATH FOR t-test IS WRONG!__