diff --git a/latex/thesis.cls b/latex/thesis.cls
index 2690e56..cdb5606 100644
--- a/latex/thesis.cls
+++ b/latex/thesis.cls
@@ -20,6 +20,7 @@
 \RequirePackage{etoolbox}
 \RequirePackage{tocloft}
 \RequirePackage{tocbibind}
+\RequirePackage{amsmath,amsfonts,amssymb}
 
 % Polyglossia set language
 \setmainlanguage{bahasai}