diff --git a/applications/main/u2f/u2f.c b/applications/main/u2f/u2f.c
index 0143eb245..132baf4f9 100644
--- a/applications/main/u2f/u2f.c
+++ b/applications/main/u2f/u2f.c
@@ -280,6 +280,8 @@ static uint16_t u2f_register(U2fData* U2F, uint8_t* buf) {
         MCHECK(mbedtls_md_hmac_update(&hmac_ctx, private, sizeof(private)));
         MCHECK(mbedtls_md_hmac_update(&hmac_ctx, req->app_id, sizeof(req->app_id)));
         MCHECK(mbedtls_md_hmac_finish(&hmac_ctx, handle.hash));
+
+        mbedtls_md_free(&hmac_ctx);
     }
 
     // Generate public key
@@ -387,6 +389,8 @@ static uint16_t u2f_authenticate(U2fData* U2F, uint8_t* buf) {
         MCHECK(mbedtls_md_hmac_update(&hmac_ctx, priv_key, sizeof(priv_key)));
         MCHECK(mbedtls_md_hmac_update(&hmac_ctx, req->app_id, sizeof(req->app_id)));
         MCHECK(mbedtls_md_hmac_finish(&hmac_ctx, mac_control));
+
+        mbedtls_md_free(&hmac_ctx);
     }
 
     if(memcmp(req->key_handle.hash, mac_control, sizeof(mac_control)) != 0) {
diff --git a/lib/nfc/protocols/mf_ultralight/mf_ultralight_poller_i.c b/lib/nfc/protocols/mf_ultralight/mf_ultralight_poller_i.c
index 141ab6c46..d84377612 100644
--- a/lib/nfc/protocols/mf_ultralight/mf_ultralight_poller_i.c
+++ b/lib/nfc/protocols/mf_ultralight/mf_ultralight_poller_i.c
@@ -37,7 +37,7 @@ MfUltralightError mf_ultralight_poller_auth_pwd(
     furi_check(data);
 
     uint8_t auth_cmd[5] = {MF_ULTRALIGHT_CMD_PWD_AUTH}; //-V1009
-    memccpy(&auth_cmd[1], data->password.data, 0, MF_ULTRALIGHT_AUTH_PASSWORD_SIZE);
+    memcpy(&auth_cmd[1], data->password.data, MF_ULTRALIGHT_AUTH_PASSWORD_SIZE);
     bit_buffer_copy_bytes(instance->tx_buffer, auth_cmd, sizeof(auth_cmd));
 
     MfUltralightError ret = MfUltralightErrorNone;