diff --git a/client/src/mifare/desfirecore.c b/client/src/mifare/desfirecore.c
index 80d5669fa..21f08dcd2 100644
--- a/client/src/mifare/desfirecore.c
+++ b/client/src/mifare/desfirecore.c
@@ -1843,7 +1843,7 @@ static int DesfireCommandEx(DesfireContext_t *dctx, uint8_t cmd, uint8_t *data,
         *resplen = 0;
 
     uint8_t respcode = 0xff;
-    uint8_t xresp[257] = {0};
+    uint8_t xresp[2050] = {0};
     size_t xresplen = 0;
     int res = DesfireExchangeEx(false, dctx, cmd, data, datalen, &respcode, xresp, &xresplen, true, splitbysize);
     if (res != PM3_SUCCESS)