diff --git a/dekker_thesis.tex b/dekker_thesis.tex
index c6bfa89..82745a1 100644
--- a/dekker_thesis.tex
+++ b/dekker_thesis.tex
@@ -1,6 +1,8 @@
 \documentclass[
-paper=9in:6in,
-DIV=calc,
+% TODO: book format
+% paper=210mm:148mm,
+% DIV=calc,
+a4paper
 listof=totoc,
 toc=bib,
 ]{scrbook}