X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/545a1f385c4e9f3fc28729e3a4c6a50e080c72f9..423efaccadefe71fc2c1adb9f7823d2a64844e51:/armsrc/iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 5cd7ea78..bae80b8e 100644
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1925,7 +1925,7 @@ void ReaderMifare(uint32_t parameter)
 		{
 			if ( (parameter != 0) && (memcmp(nt, nt_noattack, 4) == 0) ) continue;
 
-			isNULL = (nt_attacked[0] == 0) && (nt_attacked[1] == 0) && (nt_attacked[2] == 0) && (nt_attacked[3] == 0);
+			isNULL = !(nt_attacked[0] == 0) && (nt_attacked[1] == 0) && (nt_attacked[2] == 0) && (nt_attacked[3] == 0);
 			if ( (isNULL != 0 ) && (memcmp(nt, nt_attacked, 4) != 0) ) continue;
 
 			if (nt_diff == 0)