diff --git a/library/pk_wrap.h b/library/pk_wrap.h
index 1b490cc..5e81a65 100644
--- a/library/pk_wrap.h
+++ b/library/pk_wrap.h
@@ -136,7 +136,8 @@
 #endif
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-extern const mbedtls_pk_info_t mbedtls_pk_opaque_info;
+extern const mbedtls_pk_info_t mbedtls_pk_ecdsa_opaque_info;
+extern const mbedtls_pk_info_t mbedtls_pk_rsa_opaque_info;
 
 #if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
 int mbedtls_pk_error_from_psa_ecdsa( psa_status_t status );