diff --git a/n/Mathematica.nb b/m/Mathematica.nb
similarity index 100%
rename from n/Mathematica.nb
rename to m/Mathematica.nb
diff --git a/readme.md b/readme.md
index 1be2e8e6..d3a952b7 100644
--- a/readme.md
+++ b/readme.md
@@ -498,6 +498,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [Malbolge](m/Malbolge.mbg)
 * [Mariolang](m/Mariolang)
 * [Markdown](m/Markdown.md)
+* [Mathematica](m/Mathematica.nb)
 * [Mathematica Online](m/Mathematica%20Online.nb)
 * [MATLAB 1.0](m/MATLAB%201.0.m)
 * [MATLAB](m/MATLAB.m)
@@ -527,7 +528,6 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [MXML](m/MXML.mxml)
 * [Myrddin](m/Myrddin.myr)
 * [MySQL](m/MySQL.sql)
-* [Mathematica](n/Mathematica.nb)
 * [Nadeshiko](n/Nadeshiko.fjo)
 * [Neko](n/Neko.neko)
 * [Nemerle](n/Nemerle.n)