diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 53158bd..47e56e8 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2423,7 +2423,7 @@
     const uint16_t sig_alg)
 {
     switch (sig_alg) {
-#if defined(MBEDTLS_PK_CAN_ECDSA_SOME)
+#if defined(PSA_HAVE_ALG_SOME_ECDSA)
 #if defined(PSA_WANT_ALG_SHA_256) && defined(PSA_WANT_ECC_SECP_R1_256)
         case MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256:
             break;
@@ -2436,7 +2436,7 @@
         case MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512:
             break;
 #endif /* PSA_WANT_ALG_SHA_512 && MBEDTLS_ECP_DP_SECP521R1_ENABLED */
-#endif /* MBEDTLS_PK_CAN_ECDSA_SOME */
+#endif /* PSA_HAVE_ALG_SOME_ECDSA */
 
 #if defined(MBEDTLS_PKCS1_V21)
 #if defined(PSA_WANT_ALG_SHA_256)