diff --git a/ptbposter/ptbposter-tcb.sty b/ptbposter/ptbposter-tcb.sty
index 139def0b453cfba5ba3a49792183d10a18155241..a14e00d1d890921bd9802f6f3f175768435546f4 100644
--- a/ptbposter/ptbposter-tcb.sty
+++ b/ptbposter/ptbposter-tcb.sty
@@ -77,13 +77,13 @@
   adjusted title/.style={title={\raisebox{0pt}[\height][0pt]{#1}}}
 }
 
-\AtBeginDocument{%   
+\AddToHook{begindocument/end}{%
   \protected@edef\PTB@tempa{\noexpand\tcbposterset{poster={\PTB@posterSet},%
     boxes={\PTB@boxesSet}}}%
   \PTB@tempa
   \begin{tcbposter}%
 }
-\AtEndDocument{%
+\AddToHook{enddocument}{%
   \end{tcbposter}%
 }
 
diff --git a/ptbposter/tcb-example1.pdf b/ptbposter/tcb-example1.pdf
index 1e9affcb388bd0baff07ec70f7e5b4743cd22423..817eda45362c156d54e8a15298b9471c63224fb8 100644
Binary files a/ptbposter/tcb-example1.pdf and b/ptbposter/tcb-example1.pdf differ
diff --git a/ptbposter/tcb-example1.tex b/ptbposter/tcb-example1.tex
index 7407ac164ee42c12ca6420afda93ad3b9f4c7e5a..4da6009813309a7a09af7e19c6d1f3cbd6bcd398 100644
--- a/ptbposter/tcb-example1.tex
+++ b/ptbposter/tcb-example1.tex
@@ -98,7 +98,7 @@ Blabla Blabla Blabla Blabla Blabla Blabla Blabla Blabla Blabla Blabla Blabla
     \section{Makros}
     \verb|\posterSet|: Setzt Parameter zur Boxenpositionierung:
     \begin{itemize}
-      \item \verb!showframe=true|false! % zur Orientierung
+      \item \verb!showframe=true|false! (Informationen zur Orientierung)
       \item \verb!columns=n!: Anzahl der Spalten
       \item \verb!rows=n!: Anzahl der Zeilen
       \item \verb!spacing=n!: Abstand zwischen den Boxen und zum Rand