X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/d03fb293bce1b06d49fb9faf5c492a1e2effc24b..fc7a78f2d180b51da57ddeb11570899abcd7191b:/client/emv/cmdemv.c

diff --git a/client/emv/cmdemv.c b/client/emv/cmdemv.c
index 42c8524a..c53b02af 100644
--- a/client/emv/cmdemv.c
+++ b/client/emv/cmdemv.c
@@ -8,6 +8,7 @@
 // EMV commands
 //-----------------------------------------------------------------------------
 
+#include <ctype.h>
 #include "cmdemv.h"
 #include "test/cryptotest.h"
 
@@ -69,7 +70,7 @@ int CmdHFEMVSelect(const char *cmd) {
 					return 1;
 		}
 
-		if (isxdigit(c)) {
+		if (isxdigit((unsigned char)c)) {
 			switch(param_gethex_to_eol(cmd, cmdp, data, sizeof(data), &datalen)) {
 			case 1:
 				PrintAndLog("Invalid HEX value.");