Khorben/warnings (#519)

[proxmark3-svn] / client / emv / cmdemv.c

diff --git a/client/emv/cmdemv.c b/client/emv/cmdemv.c
index 42c8524aaaa897e80df91033e6b3dda6811060d0..c53b02af1a1dd1e4e58225a0f2dc905332e312ae 100644 (file)
--- 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.");