Khorben/warnings (#519)

[proxmark3-svn] / client / cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index d9578af25768e8aa0e6e7b5d4a91101bb5ea1cd9..5ebf814498a1f18ff272051986fcad131969fe63 100644 (file)
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1089,7 +1089,7 @@ int CmdHF14AMfChk(const char *Cmd)
 \r
                                        if( buf[0]=='#' ) continue;     //The line start with # is comment, skip\r
 \r
-                                       if (!isxdigit(buf[0])){\r
+                                       if (!isxdigit((unsigned char)buf[0])){\r
                                                PrintAndLog("File content error. '%s' must include 12 HEX symbols",buf);\r
                                                continue;\r
                                        }\r