diff --git a/tests/audit.c b/tests/audit.c
index ccbc56af..bc8a5718 100644
--- a/tests/audit.c
+++ b/tests/audit.c
@@ -19,8 +19,7 @@
    You need to make sure that the size of the screen matches
    the one being debugged.
 
-   This code was written by Lars Doelle <lars.doelle@on-line.de> 
-   in 1998, no copyright is claimed.
+   This code was written by Lars Doelle <lars.doelle@on-line.de>.
    This code is in the public domain.
  
 */
diff --git a/tests/quote.c b/tests/quote.c
index 2fc09378..7377d861 100644
--- a/tests/quote.c
+++ b/tests/quote.c
@@ -1,8 +1,7 @@
 // a silly quotation utitility
 
 /*
-   This code was written by Lars Doelle <lars.doelle@on-line.de>
-   in 1998, no copyright is claimed.
+   This code was written by Lars Doelle <lars.doelle@on-line.de>.
    This code is in the public domain.
 */
 
diff --git a/tests/ripple.c b/tests/ripple.c
index 7047c7f9..8d45f072 100644
--- a/tests/ripple.c
+++ b/tests/ripple.c
@@ -4,6 +4,7 @@
    w = screen line width, default 80, must be > 0, max 132.
    l = how many lines to display, default 1000, must be > 0.
   Author: Frank da Cruz, Columbia University, 1995.
+  This is in the public domain as far as can be determined.
 */
 char *crlf = "\015\012";
 char *p = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]\