diff --git a/include/mbedtls/config_adjust_legacy_crypto.h b/include/mbedtls/config_adjust_legacy_crypto.h
index 833f15268..eb52d3f23 100644
--- a/include/mbedtls/config_adjust_legacy_crypto.h
+++ b/include/mbedtls/config_adjust_legacy_crypto.h
@@ -402,8 +402,8 @@
 
 /* psa_util file features some ECDSA conversion functions, to convert between
  * legacy's ASN.1 DER format and PSA's raw one. */
-#if defined(MBEDTLS_ECDSA_C) || defined(MBEDTLS_PSA_CRYPTO_C) && \
-    (defined(PSA_WANT_ALG_ECDSA) || defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA))
+#if defined(MBEDTLS_ECDSA_C) || (defined(MBEDTLS_PSA_CRYPTO_C) && \
+    (defined(PSA_WANT_ALG_ECDSA) || defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA)))
 #define MBEDTLS_PSA_UTIL_HAVE_ECDSA
 #endif