diff --git a/firmware/targets/f7/furi_hal/furi_hal_nfc.c b/firmware/targets/f7/furi_hal/furi_hal_nfc.c
index 8910d887..c4e7ad9f 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_nfc.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_nfc.c
@@ -467,7 +467,7 @@ bool furi_hal_nfc_emulate_nfca(
                     buff_tx,
                     buff_tx_len,
                     buff_rx,
-                    sizeof(buff_rx),
+                    rfalConvBytesToBits(buff_rx_size),
                     &buff_rx_len,
                     data_type,
                     RFAL_FWT_NONE);
@@ -491,7 +491,7 @@ bool furi_hal_nfc_emulate_nfca(
                         buff_tx,
                         buff_tx_len,
                         buff_rx,
-                        sizeof(buff_rx),
+                        rfalConvBytesToBits(buff_rx_size),
                         &buff_rx_len,
                         data_type,
                         RFAL_FWT_NONE);