diff --git a/common/iso15693tools.h b/common/iso15693tools.h
index 053ca56ca..70382ce04 100644
--- a/common/iso15693tools.h
+++ b/common/iso15693tools.h
@@ -1,5 +1,11 @@
-// ISO15693 commons
-// Adrian Dabrowski 2010 and others, GPLv2
+//-----------------------------------------------------------------------------
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// ISO15693 other commons
+//-----------------------------------------------------------------------------
+// Adrian Dabrowski 2010 and otherss
 // Christian Herrmann 2018
 
 #ifndef ISO15693_H__