--- shadow-4.2.1/libmisc/chkname.c.orig	2014-05-08 09:43:11.000000000 +0100
+++ shadow-4.2.1/libmisc/chkname.c	2014-07-19 11:13:35.157291993 +0100
@@ -50,14 +50,22 @@
 {
 	/*
 	 * User/group names must match [a-z_][a-z0-9_-]*[$]
+	 * Path by Andy Pieters to allow Upper-case 
+	 * (match [A-Za-z_][A-Za-z_0-9-]*[$])
 	 */
-	if (('\0' == *name) ||
-	    !((('a' <= *name) && ('z' >= *name)) || ('_' == *name))) {
+	
+	if (
+		('\0' == *name) ||
+	    !(( ('a' <= *name) && ('z' >= *name) ) ||
+		  ( ('A' <= *name) && ('Z'>=*name) )   ||
+			('_' == *name)
+		  )) {
 		return false;
 	}
 
 	while ('\0' != *++name) {
 		if (!(( ('a' <= *name) && ('z' >= *name) ) ||
+			  ( ('A' <= *name) && ('Z' >= *name) ) ||
 		      ( ('0' <= *name) && ('9' >= *name) ) ||
 		      ('_' == *name) ||
 		      ('-' == *name) ||