diff --git a/library/ui/x11/constants.factor b/library/ui/x11/constants.factor
index 802be0151c..eaa77f86ed 100644
--- a/library/ui/x11/constants.factor
+++ b/library/ui/x11/constants.factor
@@ -1,4 +1,4 @@
-! Copyright (C) 2005, 2006 Eduardo Cavazos
+! Copyright (C) 2005, 2006 Eduardo Cavazos and Alex Chapman
 ! See http://factorcode.org/license.txt for BSD license.
 
 ! Based on X.h
diff --git a/library/ui/x11/glx.factor b/library/ui/x11/glx.factor
index 3b8a9d90bb..c1117a12ab 100644
--- a/library/ui/x11/glx.factor
+++ b/library/ui/x11/glx.factor
@@ -1,4 +1,4 @@
-! Copyright (C) 2005, 2006 Eduardo Cavazos
+! Copyright (C) 2005, 2006 Eduardo Cavazos and Alex Chapman
 ! See http://factorcode.org/license.txt for BSD license.
 !
 ! based on glx.h from xfree86, and some of glxtokens.h