X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ad939de5017f3451376d6f559858a30bae675964..f366aea3e1841c022a99dead684864b48fb472f5:/client/scripting.c

diff --git a/client/scripting.c b/client/scripting.c
index e73c7138..232da889 100644
--- a/client/scripting.c
+++ b/client/scripting.c
@@ -221,7 +221,7 @@ static int l_iso14443b_crc(lua_State *L)
 	unsigned char buf[USB_CMD_DATA_SIZE];
 	size_t len = 0;
 	const char *data = luaL_checklstring(L, 1, &len);
-	if (USB_CMD_DATA_SIZE < len)
+	if (len > USB_CMD_DATA_SIZE-2)
 		len =  USB_CMD_DATA_SIZE-2;
 
 	for (int i = 0; i < len; i += 2) {