diff --git a/Environment/BaseExponential.h b/Environment/BaseExponential.h
index 15585b6af48cdb33f4484d35da228ece4c8831f0..462c73c26a0713233e7b3c37b30d25cb3f57bcb4 100644
--- a/Environment/BaseExponential.h
+++ b/Environment/BaseExponential.h
@@ -1,5 +1,6 @@
+
 /*
- * (c) Copyright 2019 CORSIKA Project, corsika-project@lists.kit.edu
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
  *
  * See file AUTHORS for a list of contributors.
  *
diff --git a/Environment/SlidingPlanarExponential.h b/Environment/SlidingPlanarExponential.h
index 3cffa3afb7b4cb0ce803b4f0ed4edfd1a2392445..71f8e27d917e3e34fc5d8c2fc663d5142d07aa59 100644
--- a/Environment/SlidingPlanarExponential.h
+++ b/Environment/SlidingPlanarExponential.h
@@ -1,5 +1,6 @@
+
 /*
- * (c) Copyright 2019 CORSIKA Project, corsika-project@lists.kit.edu
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
  *
  * See file AUTHORS for a list of contributors.
  *
diff --git a/Framework/Utilities/sgn.h b/Framework/Utilities/sgn.h
index 43d9a9fad728785ec851424b2113f5e7dac60af1..b0084ee04827345548384b00cd73ea4c76209086 100644
--- a/Framework/Utilities/sgn.h
+++ b/Framework/Utilities/sgn.h
@@ -1,3 +1,14 @@
+
+/*
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * See file AUTHORS for a list of contributors.
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
 #ifndef _utilities_sgn_h
 #define _utilities_sgn_h
 
diff --git a/Main/Environment.h b/Main/Environment.h
index 6839def48c2f6fddfafd0beb5fd4ca46058ebd09..4227e0de4f5490ee2ac5a90857d68c5653e865ec 100644
--- a/Main/Environment.h
+++ b/Main/Environment.h
@@ -8,3 +8,5 @@
  * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
  * the license.
  */
+
+
diff --git a/Main/Stack.h b/Main/Stack.h
index 6839def48c2f6fddfafd0beb5fd4ca46058ebd09..4227e0de4f5490ee2ac5a90857d68c5653e865ec 100644
--- a/Main/Stack.h
+++ b/Main/Stack.h
@@ -8,3 +8,5 @@
  * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
  * the license.
  */
+
+
diff --git a/Processes/UrQMD/UrQMD.cc b/Processes/UrQMD/UrQMD.cc
index df4456bfb965f398720e33aafd286ed56bbdb307..dc6b60c1d3bdaf2098c48c93ce8dda03e932d82c 100644
--- a/Processes/UrQMD/UrQMD.cc
+++ b/Processes/UrQMD/UrQMD.cc
@@ -1,3 +1,14 @@
+
+/*
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * See file AUTHORS for a list of contributors.
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
 #include <corsika/geometry/QuantityVector.h>
 #include <corsika/geometry/Vector.h>
 #include <corsika/particles/ParticleProperties.h>
diff --git a/Processes/UrQMD/UrQMD.h b/Processes/UrQMD/UrQMD.h
index 11c8a0eb9a14268f1729a2fbf23508bcf024bcb4..708526a668a7ffe054ebbd67e3345af2115401ee 100644
--- a/Processes/UrQMD/UrQMD.h
+++ b/Processes/UrQMD/UrQMD.h
@@ -1,3 +1,14 @@
+
+/*
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * See file AUTHORS for a list of contributors.
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
 #ifndef _Processes_UrQMD_UrQMD_h
 #define _Processes_UrQMD_UrQMD_h
 
diff --git a/Processes/UrQMD/testUrQMD.cc b/Processes/UrQMD/testUrQMD.cc
index 3e347a827eaf5564836d5f82cabb55dbce471ffe..c80b9ad1175c0c1c31bafc83fe2e316d19dab113 100644
--- a/Processes/UrQMD/testUrQMD.cc
+++ b/Processes/UrQMD/testUrQMD.cc
@@ -1,5 +1,6 @@
+
 /*
- * (c) Copyright 2019 CORSIKA Project, corsika-project@lists.kit.edu
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
  *
  * See file AUTHORS for a list of contributors.
  *