X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/bc3b2f7f9422d8d112b48fa46c0d3fa8446285ec..3775e9e8651ee9d11c11efca550442128f468ee5:/client/cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index d9578af2..5ebf8144 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1089,7 +1089,7 @@ 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;
 					}