diff --git a/ptbletter/ptbletter-doc.pdf b/ptbletter/ptbletter-doc.pdf
index f36a9029611662e50b98e25b3ff50dcf4fb9d33f..cea3961fbad69d3bb668bccb54bc80575f1437a7 100644
Binary files a/ptbletter/ptbletter-doc.pdf and b/ptbletter/ptbletter-doc.pdf differ
diff --git a/ptbletter/ptbletter-doc.tex b/ptbletter/ptbletter-doc.tex
index fa8c3495c98314262c4aa20180899a1d00ba9557..eac8158a69ba68bccd4fe4f7ea906bbb3e3f25af 100644
--- a/ptbletter/ptbletter-doc.tex
+++ b/ptbletter/ptbletter-doc.tex
@@ -5,7 +5,7 @@
 ,serif
 ,BLN
 ,head1
-,visualize
+%,visualize
 ]{ptbletter}
 
 \yourref{4711-0815}
diff --git a/ptbletter/ptbletter.cls b/ptbletter/ptbletter.cls
index 96311927c3ee65d4205a3191d2d846161e437a3c..2641d882e0ec3779469eeda6c3adbce17113841f 100644
--- a/ptbletter/ptbletter.cls
+++ b/ptbletter/ptbletter.cls
@@ -14,7 +14,7 @@
 
 \newif\ifPTB@useCMYK \PTB@useCMYKfalse % vorerst
 
-\RequirePackage{xcolor}
+\RequirePackage{graphicx,xcolor}
 
 \ifPTB@useCMYK
   \definecolor{PTBcolor}{cmyk}{1,0.32549,0.12549,0.12549}