diff --git a/templates/unittest_head.tex b/templates/unittest_head.tex
index 30701e8..d3f3327 100644
--- a/templates/unittest_head.tex
+++ b/templates/unittest_head.tex
@@ -2,6 +2,8 @@
 \documentclass[a4paper]{article}
 %\documentclass[a4paper,landscape]{article}
 
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
 \renewcommand{\familydefault}{\sfdefault}
 \usepackage[table]{xcolor}
 \definecolor{orange}{rgb}{1, 0.7, 0}
@@ -31,6 +33,16 @@
 \setlength{\parskip}{9pt plus3pt minus3pt}
 
 \usepackage{listings}
+\lstset{literate=%
+    {Ö}{ {\"O} }1
+    {Ä}{ {\"A} }1
+    {Ü}{ {\"U} }1
+    {ß}{ {\ss} }1
+    {ü}{ {\"u} }1
+    {ä}{ {\"a} }1
+    {ö}{ {\"o} }1
+    {~}{ {\textasciitilde} }1
+}
 \usepackage{color}
 \definecolor{bg-partially-covered}{rgb}{1,1,0.6}    % light-yellow
 \definecolor{bg-uncovered}{rgb}{1,0.8,0.8}          % light-red