diff --git a/my-symbols.sty b/my-symbols.sty
index 4fd8a083b829bdab4c0709071552020220fc1e76..9581980ec9ac5f42afdd86e0637c6ba3a2b487c9 100644
--- a/my-symbols.sty
+++ b/my-symbols.sty
@@ -5,6 +5,7 @@
 \ProvidesPackage{my-symbols}[2012/08/16 v0.1
                  LaTeX package for symbols configuration]
 
+\RequirePackage{mathtools}
 \RequirePackage{amssymb}
 \RequirePackage{amsfonts}