diff --git a/main.tex b/main.tex
index 09f8f5d..a9acf04 100644
--- a/main.tex
+++ b/main.tex
@@ -4,7 +4,7 @@
 % !TeX root = main.tex
 
 % Declare Document Class
-\documentclass[a4paper,12pt,twoside,twocolumn,landscape]{book}
+\documentclass[a3paper,12pt,twoside,twocolumn,landscape]{book}
 \include{structure} % Load structure cfg for document
 \include{acronyms} % Load acronym list