--- lib/pgp/utils/pgpFileType.c.orig	Sat Aug  9 18:44:33 1997
+++ lib/pgp/utils/pgpFileType.c	Fri Apr 30 02:47:14 1999
@@ -185,7 +185,7 @@
 pgpFileTypeBinary(char const *lang, byte const *buf, unsigned len)
 	{
 			unsigned highlimit;
-			char c;
+			unsigned char c;
 
 			if (!len)
 				 return 1;		/* empty file or error, not a text file */