X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/55b700a0ac90f85aef1ea73a5edc153c32f8b42f..e1e7a09db1d2fea34ea44c4cadda0c47ccf4269f:/client/cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index cca4da88..c471fdf7 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1094,7 +1094,7 @@ int CmdHF14AMfChk(const char *Cmd)
 
 					if( buf[0]=='#' ) continue;	//The line start with # is comment, skip
 
-					if (!isxdigit(buf[0])){
+					if (!isxdigit((unsigned char)buf[0])){
 						PrintAndLog("File content error. '%s' must include 12 HEX symbols",buf);
 						continue;
 					}