diff --git a/ptbposter/ptbposter.cls b/ptbposter/ptbposter.cls
index 67339b52997c5389faccebe7d811b0f07e555e83..f9ab3850de80a101a4171920881dbfca62c6d6c4 100644
--- a/ptbposter/ptbposter.cls
+++ b/ptbposter/ptbposter.cls
@@ -151,7 +151,6 @@
 \ifx\PTB@target@size\@empty\else % Sheet scaling is necessary
   \RequirePackage{blowup}
   \IfPackageAtLeastTF{blowup}{2022/09/19}{%
-    \RequirePackage{blowup}%
     \ClassNoteNoLine{ptbposter}{%
       Scaling the sheet from size `a0' to size `\PTB@target@size'}%
     \ifPTBlandscape
diff --git a/ptbposter/tcb-example1.pdf b/ptbposter/tcb-example1.pdf
index 0f36e478d65b21c51baab9c4de5ae9f799d0c85d..8fa40c8ba6ffee9df91bbd0a4813de64698681f3 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 fded5994010727a8d4cf0b444a3098e1469a2e82..38a32743b7c60e12adb2c945f20705c5b3b23bb7 100644
--- a/ptbposter/tcb-example1.tex
+++ b/ptbposter/tcb-example1.tex
@@ -4,7 +4,7 @@
 ]{ptbposter}
 
 \usepackage[
-%,boxlayout=0
+%,boxlayout=0 % 0, 1, 2, 3 -- default: 2
 ]{ptbposter-tcb} 
 
 \phone{+49-30-3481-7316}
diff --git a/ptbposter/tcb-example2.tex b/ptbposter/tcb-example2.tex
index 97271e13a95287998ce5344a1bf6ef2d86332b39..42b8f22e955fcb7364cd2832a7ba2c21c6345646 100644
--- a/ptbposter/tcb-example2.tex
+++ b/ptbposter/tcb-example2.tex
@@ -5,7 +5,7 @@
 ,layout2018
 ]{ptbposter}
 \usepackage[
-boxlayout=2 % 0, 1, 2, 3 # default: 2
+boxlayout=2 % 0, 1, 2, 3 -- default: 2
 ]{ptbposter-tcb}
 
 \phone{+49-30-3481-7316}