diff --git a/arbeitsanweisung/vl-arbeitsanweisung.cls b/arbeitsanweisung/vl-arbeitsanweisung.cls
index ecc6fe7085f58671fc451b0af0ad9482ece0caa8..cf4e2b56c7d08fdafdd0b48fab121ea74e1a6466 100644
--- a/arbeitsanweisung/vl-arbeitsanweisung.cls
+++ b/arbeitsanweisung/vl-arbeitsanweisung.cls
@@ -264,6 +264,44 @@ footskip=85bp,
 
 \renewcommand*\marginfont{\normalfont\normalsize\itshape\color{red}}
 
+\RequirePackage[final]{listings}
+\RequirePackage{lstautogobble}
+
+\newcommand*\ptb@lstfont{\small\ttfamily}
+
+\lstset{
+,language={}
+,basicstyle=\ptb@lstfont
+,numbers=none
+,backgroundcolor={}
+,tabsize=2
+,basicstyle=\ptb@lstfont
+%,identifierstyle=\bfseries\ptb@lstfont
+,keywordstyle=\bfseries\ptb@lstfont
+,stringstyle=\ptb@lstfont
+,commentstyle=\itshape\ptb@lstfont
+,basewidth=0.55em
+,keepspaces
+,numbers=none
+,frame=single
+,framesep=\fboxsep
+,aboveskip=\medskipamount
+,belowskip=1pt plus .5pt minus .5pt %
+,xleftmargin=\fboxsep
+,xrightmargin=\fboxsep
+,columns=fullflexible
+%,extendedchars=true
+,showspaces=false
+,showstringspaces=false
+,breaklines=true
+,breakindent=0.5em
+,breakautoindent=true
+,breakatwhitespace=false  % ???
+,captionpos=t
+,postbreak=\mbox{$\hookrightarrow$}
+,autogobble=true
+} 
+
 \emergencystretch=3em % 
 
 \raggedbottom
diff --git a/ptbposter/ptbposter-2020.clo b/ptbposter/ptbposter-2020.clo
index 6f9c13e84974f93fbc86833d7c796e1ff15e9224..0b1f9bfff5545d6423ff7ac2ddd7b72fdbf9e562 100644
--- a/ptbposter/ptbposter-2020.clo
+++ b/ptbposter/ptbposter-2020.clo
@@ -77,7 +77,7 @@
   \repeat
   \endgroup
   \put(\PTB@leftmargin,-0.158\PTB@scale@base){%
-    \begin{hyphenrules}{nohyphenation}
+    \begin{hyphenrules}{nohyphenation}%
       \PTB@tempa% Title
     \end{hyphenrules}
   }%
diff --git a/ptbposter/ptbposter-doc-1.pdf b/ptbposter/ptbposter-doc-1.pdf
index 899e71e03ae8476dda9d355f341b0e5a15e138b1..6cd1864481cde1b473ce504709888f758874837f 100644
Binary files a/ptbposter/ptbposter-doc-1.pdf and b/ptbposter/ptbposter-doc-1.pdf differ