diff --git a/include/psa/crypto_sizes.h b/include/psa/crypto_sizes.h
index af8a4a6..9bbcb34 100644
--- a/include/psa/crypto_sizes.h
+++ b/include/psa/crypto_sizes.h
@@ -121,7 +121,7 @@
 /* Note: for HMAC-SHA-3, the block size is 144 bytes for HMAC-SHA3-226,
  * 136 bytes for HMAC-SHA3-256, 104 bytes for SHA3-384, 72 bytes for
  * HMAC-SHA3-512. */
-#if defined(MBEDTLS_SHA512_C)
+#if defined(PSA_WANT_ALG_SHA_512) || defined(PSA_WANT_ALG_SHA_384)
 #define PSA_HASH_MAX_SIZE 64
 #define PSA_HMAC_MAX_HASH_BLOCK_SIZE 128
 #else