diff --git a/src/cc65/util.c b/src/cc65/util.c
index e2ddc474f..48a166b57 100644
--- a/src/cc65/util.c
+++ b/src/cc65/util.c
@@ -1,8 +1,35 @@
-/*
- * util.c
- *
- * Ullrich von Bassewitz, 18.06.1998
- */
+/*****************************************************************************/
+/*                                                                           */
+/*				    util.c                                   */
+/*                                                                           */
+/*		   Utility functions for the cc65 C compiler                 */
+/*                                                                           */
+/*                                                                           */
+/*                                                                           */
+/* (C) 1998	 Ullrich von Bassewitz                                       */
+/*               Wacholderweg 14                                             */
+/*               D-70597 Stuttgart                                           */
+/* EMail:        uz@musoftware.de                                            */
+/*                                                                           */
+/*                                                                           */
+/* This software is provided 'as-is', without any expressed or implied       */
+/* warranty.  In no event will the authors be held liable for any damages    */
+/* arising from the use of this software.                                    */
+/*                                                                           */
+/* Permission is granted to anyone to use this software for any purpose,     */
+/* including commercial applications, and to alter it and redistribute it    */
+/* freely, subject to the following restrictions:                            */
+/*                                                                           */
+/* 1. The origin of this software must not be misrepresented; you must not   */
+/*    claim that you wrote the original software. If you use this software   */
+/*    in a product, an acknowledgment in the product documentation would be  */
+/*    appreciated but is not required.                                       */
+/* 2. Altered source versions must be plainly marked as such, and must not   */
+/*    be misrepresented as being the original software.                      */
+/* 3. This notice may not be removed or altered from any source              */
+/*    distribution.                                                          */
+/*                                                                           */
+/*****************************************************************************/
 
 
 
diff --git a/src/cc65/util.h b/src/cc65/util.h
index 700f85dba..ade1e11e1 100644
--- a/src/cc65/util.h
+++ b/src/cc65/util.h
@@ -1,8 +1,35 @@
-/*
- * util.h
- *
- * Ullrich von Bassewitz, 18.06.1998
- */
+/*****************************************************************************/
+/*                                                                           */
+/*				    util.h                                   */
+/*                                                                           */
+/*		   Utility functions for the cc65 C compiler                 */
+/*                                                                           */
+/*                                                                           */
+/*                                                                           */
+/* (C) 1998	 Ullrich von Bassewitz                                       */
+/*               Wacholderweg 14                                             */
+/*               D-70597 Stuttgart                                           */
+/* EMail:        uz@musoftware.de                                            */
+/*                                                                           */
+/*                                                                           */
+/* This software is provided 'as-is', without any expressed or implied       */
+/* warranty.  In no event will the authors be held liable for any damages    */
+/* arising from the use of this software.                                    */
+/*                                                                           */
+/* Permission is granted to anyone to use this software for any purpose,     */
+/* including commercial applications, and to alter it and redistribute it    */
+/* freely, subject to the following restrictions:                            */
+/*                                                                           */
+/* 1. The origin of this software must not be misrepresented; you must not   */
+/*    claim that you wrote the original software. If you use this software   */
+/*    in a product, an acknowledgment in the product documentation would be  */
+/*    appreciated but is not required.                                       */
+/* 2. Altered source versions must be plainly marked as such, and must not   */
+/*    be misrepresented as being the original software.                      */
+/* 3. This notice may not be removed or altered from any source              */
+/*    distribution.                                                          */
+/*                                                                           */
+/*****************************************************************************/
 
 
 
@@ -12,7 +39,7 @@
 
 
 /*****************************************************************************/
-/*	      			     code		     		     */
+/*	      			     Code		     		     */
 /*****************************************************************************/