diff --git a/lib/nfc/helpers/bit_buffer.c b/lib/nfc/helpers/bit_buffer.c
index 3de216d1c45..7325af13596 100644
--- a/lib/nfc/helpers/bit_buffer.c
+++ b/lib/nfc/helpers/bit_buffer.c
@@ -36,6 +36,7 @@ void bit_buffer_reset(BitBuffer* buf) {
     furi_assert(buf);
 
     memset(buf->data, 0, buf->capacity_bytes);
+    memset(buf->parity, 0, buf->capacity_bytes);
     buf->size_bits = 0;
 }
 
diff --git a/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller.c b/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller.c
index bac2d493cc0..3ea74f60cf9 100644
--- a/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller.c
+++ b/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller.c
@@ -70,8 +70,7 @@ static NfcCommand iso14443_3b_poller_run(NfcGenericEvent event, void* context) {
 
     if(nfc_event->type == NfcEventTypePollerReady) {
         if(instance->state != Iso14443_3bPollerStateActivated) {
-            Iso14443_3bData data = {};
-            Iso14443_3bError error = iso14443_3b_poller_async_activate(instance, &data);
+            Iso14443_3bError error = iso14443_3b_poller_async_activate(instance, instance->data);
             if(error == Iso14443_3bErrorNone) {
                 instance->iso14443_3b_event.type = Iso14443_3bPollerEventTypeReady;
                 instance->iso14443_3b_event_data.error = error;
@@ -105,7 +104,7 @@ static bool iso14443_3b_poller_detect(NfcGenericEvent event, void* context) {
     furi_assert(instance->state == Iso14443_3bPollerStateIdle);
 
     if(nfc_event->type == NfcEventTypePollerReady) {
-        Iso14443_3bError error = iso14443_3b_poller_async_activate(instance, NULL);
+        Iso14443_3bError error = iso14443_3b_poller_async_activate(instance, instance->data);
         protocol_detected = (error == Iso14443_3bErrorNone);
     }
 
diff --git a/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller_i.c b/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller_i.c
index d0ce99578e1..35c67c43cdc 100644
--- a/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller_i.c
+++ b/lib/nfc/protocols/iso14443_3b/iso14443_3b_poller_i.c
@@ -65,7 +65,7 @@ Iso14443_3bError
     furi_assert(instance);
     furi_assert(instance->nfc);
 
-    iso14443_3b_reset(instance->data);
+    iso14443_3b_reset(data);
 
     Iso14443_3bError ret;
 
@@ -99,16 +99,16 @@ Iso14443_3bError
         const Iso14443_3bAtqB* atqb =
             (const Iso14443_3bAtqB*)bit_buffer_get_data(instance->rx_buffer);
 
-        memcpy(instance->data->uid, atqb->uid, ISO14443_3B_UID_SIZE);
-        memcpy(instance->data->app_data, atqb->app_data, ISO14443_3B_APP_DATA_SIZE);
-        memcpy(instance->data->protocol_info, atqb->protocol_info, ISO14443_3B_PROTOCOL_INFO_SIZE);
+        memcpy(data->uid, atqb->uid, ISO14443_3B_UID_SIZE);
+        memcpy(data->app_data, atqb->app_data, ISO14443_3B_APP_DATA_SIZE);
+        memcpy(data->protocol_info, atqb->protocol_info, ISO14443_3B_PROTOCOL_INFO_SIZE);
 
         bit_buffer_reset(instance->tx_buffer);
         bit_buffer_reset(instance->rx_buffer);
 
         // Send ATTRIB
         bit_buffer_append_byte(instance->tx_buffer, 0x1d);
-        bit_buffer_append_bytes(instance->tx_buffer, atqb->uid, ISO14443_3B_UID_SIZE);
+        bit_buffer_append_bytes(instance->tx_buffer, data->uid, ISO14443_3B_UID_SIZE);
         bit_buffer_append_byte(instance->tx_buffer, 0x00);
         bit_buffer_append_byte(instance->tx_buffer, ISO14443_3B_ATTRIB_FRAME_SIZE_256);
         bit_buffer_append_byte(instance->tx_buffer, 0x01);
@@ -130,11 +130,6 @@ Iso14443_3bError
         }
 
         instance->state = Iso14443_3bPollerStateActivated;
-
-        if(data) {
-            iso14443_3b_copy(data, instance->data);
-        }
-
     } while(false);
 
     return ret;