diff --git a/LICENCE b/LICENCE
new file mode 100644
index 0000000..ed5aa6a
--- /dev/null
+++ b/LICENCE
@@ -0,0 +1,12 @@
+Copyrights
+==========
+
+Copyright (C) 2019 Rainer Walke
+
+
+Licences
+========
+
+1. The eoR package itself is licenced under "GPL-3", the GNU GENERAL
+   PUBLIC LICENCE Version 3, see "GPL-3" below.
+...
\ No newline at end of file
diff --git a/NAMESPACE b/NAMESPACE
index 40671ad..35abca9 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -1,3 +1,4 @@
 exportPattern("^[[:alpha:]]+")
 
+importFrom("methods", "new", "validObject")
 import("data.table")