diff --git a/configs/baremetal.h b/configs/baremetal.h
index 694dceb..e39ceb5 100644
--- a/configs/baremetal.h
+++ b/configs/baremetal.h
@@ -42,21 +42,11 @@
 #define MBEDTLS_CCM_C
 
 /* Asymmetric crypto: Single-curve ECC only. */
-#define MBEDTLS_BIGNUM_C
 #define MBEDTLS_PK_C
 #define MBEDTLS_PK_PARSE_C
-#define MBEDTLS_ECDSA_C
-#define MBEDTLS_ECP_C
-#define MBEDTLS_ECP_DP_SECP256R1_ENABLED
-#define MBEDTLS_ECP_NIST_OPTIM
-#define MBEDTLS_ECDSA_DETERMINISTIC
-#define MBEDTLS_ECP_WINDOW_SIZE        2
-#define MBEDTLS_ECP_FIXED_POINT_OPTIM  0
-#define MBEDTLS_ECP_MAX_BITS   256
-#define MBEDTLS_MPI_MAX_SIZE    32 // 256 bits is 32 bytes
 
 #define MBEDTLS_SSL_CONF_SINGLE_EC
-#define MBEDTLS_SSL_CONF_SINGLE_EC_GRP_ID MBEDTLS_ECP_DP_SECP256R1
+#define MBEDTLS_SSL_CONF_SINGLE_EC_GRP_ID MBEDTLS_UECC_DP_SECP256R1
 #define MBEDTLS_SSL_CONF_SINGLE_EC_TLS_ID 23
 #define MBEDTLS_SSL_CONF_SINGLE_SIG_HASH
 #define MBEDTLS_SSL_CONF_SINGLE_SIG_HASH_MD_ID MBEDTLS_MD_SHA256