diff --git a/library/pk_internal.h b/library/pk_internal.h
index 004660e..9becbec 100644
--- a/library/pk_internal.h
+++ b/library/pk_internal.h
@@ -117,14 +117,19 @@
 #endif /* MBEDTLS_ECP_HAVE_CURVE25519 || MBEDTLS_ECP_DP_CURVE448 */
 #endif /* MBEDTLS_PK_HAVE_ECC_KEYS */
 
-#if defined(MBEDTLS_TEST_HOOKS)
+/* Helper for (deterministic) ECDSA */
+#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
+#define MBEDTLS_PK_PSA_ALG_ECDSA_MAYBE_DET  PSA_ALG_DETERMINISTIC_ECDSA
+#else
+#define MBEDTLS_PK_PSA_ALG_ECDSA_MAYBE_DET  PSA_ALG_ECDSA
+#endif
 
+#if defined(MBEDTLS_TEST_HOOKS)
 MBEDTLS_STATIC_TESTABLE int mbedtls_pk_parse_key_pkcs8_encrypted_der(
     mbedtls_pk_context *pk,
     unsigned char *key, size_t keylen,
     const unsigned char *pwd, size_t pwdlen,
     int (*f_rng)(void *, unsigned char *, size_t), void *p_rng);
-
 #endif
 
 #endif /* MBEDTLS_PK_INTERNAL_H */