X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7fba33fcc463aa70319231dd4c7dce16bde23b94..0675f200e6d52728457664e5e127af2496af9bdd:/armsrc/mifareutil.c

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index a88f21bc..c20a387a 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -311,7 +311,7 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 	// Mifare HALT
 	uint8_t* receivedAnswer = mifare_get_bigbufptr();
 
-	len = mifare_sendcmd_short(pcs, 1, 0x50, 0x00, receivedAnswer);
+	len = mifare_sendcmd_short(pcs, pcs == NULL ? 0:1, 0x50, 0x00, receivedAnswer);
 	if (len != 0) {
 		if (MF_DBGLEVEL >= 1)	Dbprintf("halt error. response len: %x", len);  
 		return 1;