diff --git a/kalibrierschein/IK-0000.clo b/kalibrierschein/IK-0000.clo
index 24602073d30213da6e727c60136962a192c922d2..793b999e0dbc7402a2504ced4c2cf0ea49ef695d 100644
--- a/kalibrierschein/IK-0000.clo
+++ b/kalibrierschein/IK-0000.clo
@@ -230,4 +230,4 @@ footskip=0bp,
 
 \endinput
 %%
-%% End of file `KK.clo'.
+%% End of file `IK-0000.clo'.
diff --git a/kalibrierschein/IK-2015.clo b/kalibrierschein/IK-2015.clo
index e442f944fc4a8897faaf7e60c2cbb20f9a77ec66..f2f28901fb4ee96be5dbdb05aef78c14186ef955 100644
--- a/kalibrierschein/IK-2015.clo
+++ b/kalibrierschein/IK-2015.clo
@@ -1,5 +1,5 @@
 
-\ProvidesFile{IK.clo}[2014/01/28 v1.0b class option (RN/PTB)]
+\ProvidesFile{IK-2015.clo}[2015/01/26 v1.0b class option (RN/PTB)]
 
 \iffalse
 
@@ -24,7 +24,7 @@ footskip=0bp,
     %------------- Kopf ------------
     %%%\put(69,783){\parbox{\textwidth}{\huge\bfseries\ks@PTB}}
     %%%\put(69,760){\parbox{\textwidth}{\large\bfseries\ks@BSuB}}
-    \put(68,754){\includegraphics[width=308bp]{PTB-logo-KS-2015.png}}
+    \put(68,754){\includegraphics[width=308bp]{PTB-logo-KS-2015.pdf}}
     %%%\put(287,680){\includegraphics[width=62bp]{Adler.pdf}}
     \put(252,640){\normalfont\huge Kalibrierschein}
     \put(260,622){\normalfont\itshape\large Calibration Certificate}
@@ -136,7 +136,7 @@ footskip=0bp,
   \begin{picture}(0,0)
     \unitlength=1bp %
     %%%\put(-1,28){\parbox{\textwidth}{\normalfont\huge\bfseries\ks@PTB}}
-    \put(-1,-5){\includegraphics[width=308bp]{PTB-logo-KS-2015.png}}
+    \put(-1,-5){\includegraphics[width=308bp]{PTB-logo-KS-2015.pdf}}
     \put(-1,-35){\parbox{\textwidth}{%
       \normalfont\small
       Seite~\thepage\ zum Kalibrierschein vom~\ks@certificateDate,
@@ -239,4 +239,4 @@ footskip=0bp,
 
 \endinput
 %%
-%% End of file `KK.clo'.
+%% End of file `IK-2015.clo'.
diff --git a/kalibrierschein/KK-0000.clo b/kalibrierschein/KK-0000.clo
index 76cef83a4c491484655e3db5dd118e26a3ed5df4..d243d466f736711afc3fe70dfda5134832db0f89 100644
--- a/kalibrierschein/KK-0000.clo
+++ b/kalibrierschein/KK-0000.clo
@@ -229,4 +229,4 @@ footskip=0bp,
 
 \endinput
 %%
-%% End of file `KK.clo'.
+%% End of file `KK-0000.clo'.
diff --git a/kalibrierschein/KK-2015.clo b/kalibrierschein/KK-2015.clo
index 183a832657816af84f080be02e3a759510911672..a3a47469626e993bee14ff9dce49164788414fcb 100644
--- a/kalibrierschein/KK-2015.clo
+++ b/kalibrierschein/KK-2015.clo
@@ -1,5 +1,5 @@
 
-\ProvidesFile{KK-2015.clo}[2015/01/21 v1.0a class option (RN/PTB)]
+\ProvidesFile{KK-2015.clo}[2015/01/26 v1.0b class option (RN/PTB)]
 
 \iffalse
 
@@ -24,7 +24,7 @@ footskip=0bp,
     %------------- Kopf ------------
     %%%\put(69,783){\parbox{\textwidth}{\huge\bfseries\ks@PTB}}
     %%%\put(69,760){\parbox{\textwidth}{\large\bfseries\ks@BSuB}}
-    \put(68,754){\includegraphics[width=308bp]{PTB-logo-KS-2015.png}}
+    \put(68,754){\includegraphics[width=308bp]{PTB-logo-KS-2015.pdf}}
     \put(287,680){\includegraphics[width=62bp]{Adler.pdf}}
     \put(252,640){\normalfont\huge Kalibrierschein}
     \put(260,622){\normalfont\itshape\large Calibration Certificate}
@@ -136,7 +136,7 @@ footskip=0bp,
   \begin{picture}(0,0)
     \unitlength=1bp %
     %%%\put(-1,28){\parbox{\textwidth}{\normalfont\huge\bfseries\ks@PTB}}
-    \put(-1,-5){\includegraphics[width=308bp]{PTB-logo-KS-2015.png}}
+    \put(-1,-5){\includegraphics[width=308bp]{PTB-logo-KS-2015.pdf}}
     \put(-1,-35){\parbox{\textwidth}{%
       \normalfont\small
       Seite~\thepage\ zum Kalibrierschein vom~\ks@certificateDate,
diff --git a/kalibrierschein/PTB-logo-KS-2015.pdf b/kalibrierschein/PTB-logo-KS-2015.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..a8d3bbdf60eb57f0b3997ae081892196cf9e74d5
Binary files /dev/null and b/kalibrierschein/PTB-logo-KS-2015.pdf differ
diff --git a/kalibrierschein/PTB-logo-KS-2015.png b/kalibrierschein/PTB-logo-KS-2015.png
deleted file mode 100644
index d4acd0615994576a7c37841d84341c8761630218..0000000000000000000000000000000000000000
Binary files a/kalibrierschein/PTB-logo-KS-2015.png and /dev/null differ