===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/file/magic-test.c,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- src/usr.bin/file/magic-test.c	2015/04/25 16:35:47	1.3
+++ src/usr.bin/file/magic-test.c	2015/05/29 14:52:10	1.4
@@ -1,4 +1,4 @@
-/* $OpenBSD: magic-test.c,v 1.3 2015/04/25 16:35:47 brynet Exp $ */
+/* $OpenBSD: magic-test.c,v 1.4 2015/05/29 14:52:10 nicm Exp $ */
 
 /*
  * Copyright (c) 2015 Nicholas Marriott <nicm@openbsd.org>
@@ -38,7 +38,7 @@
 {
 	if (a == b)
 		return (1);
-	if (cflag && tolower((u_char)a) == tolower((u_char)b))
+	if (cflag && islower((u_char)b) && tolower((u_char)a) == (u_char)b)
 		return (1);
 	return (0);
 }