--- a/checkstyle.xml	Fri Jul 13 11:40:25 2018 +0200
+++ b/checkstyle.xml	Fri Jul 13 11:56:22 2018 +0200
@@ -17,8 +17,9 @@
 
   <!-- Following interprets the header file as regular expressions. -->
   <module name="RegexpHeader">
-    <property name="headerFile" value="../java.header"/>
     <property name="fileExtensions" value="java"/>
+    <property name="header"
+              value="^/\* Copyright \(C\) .* by Bundesanstalt für Gewässerkunde$\n^ \* Software engineering by .*$\n^ \*$\n^ \* This file is Free Software under the GNU AGPL \(>=v3\)$\n^ \* and comes with ABSOLUTELY NO WARRANTY! Check out the$\n^ \* documentation coming with Dive4Elements River for details.$\n^ \*/$"/>
   </module>
 
   <module name="FileTabCharacter">