diff --git a/main.tex b/main.tex
index 3bc35e9a3c0d96bc3135e18fe9051b47f0384df1..a1ced01c4efad07e8eb88efae1f0249e036f48f6 100644
--- a/main.tex
+++ b/main.tex
@@ -1,5 +1,6 @@
 \documentclass[a4paper,openany]{book}
 \usepackage{glossaries}
+\usepackage{glossary-mcols}
 
 \input{config/preamble.tex}
 \input{config/monsters.tex}