--- mingetty-1.00.orig/mingetty.c	2002-06-04 00:27:55 +0400
+++ mingetty-1.00/mingetty.c	2002-06-04 00:31:37 +0400
@@ -366,7 +366,7 @@
 			if (c == '\n' || c == '\r') {
 				*bp = 0;
 				break;
-			} else if (!isprint (c))
+			} else if (!isgraph (c))
 				error ("%s: invalid character in login name",
 								tty);
 			else if (bp - logname >= sizeof (logname) - 1)