diff --git a/src/op/system/index.tex b/src/op/system/index.tex
index e29ed63..a9bc700 100644
--- a/src/op/system/index.tex
+++ b/src/op/system/index.tex
@@ -5,3 +5,4 @@
 \input{./os.tex}
 \input{./completely.tex}
 \input{./complete-upgrade.tex}
+\input{./module.tex}