diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 1149940..894167a 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -1400,6 +1400,12 @@
                 mbedtls_free(rsa);
             }
             break;
+#else
+        case PSA_KEY_TYPE_RSA_KEY_PAIR:
+        case PSA_KEY_TYPE_RSA_PUBLIC_KEY:
+            attributes->domain_parameters = NULL;
+            attributes->domain_parameters_size = SIZE_MAX;
+            break;
 #endif /* (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && \
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
diff --git a/library/psa_crypto_client.c b/library/psa_crypto_client.c
index 564463f..472d3d3 100644
--- a/library/psa_crypto_client.c
+++ b/library/psa_crypto_client.c
@@ -53,6 +53,11 @@
     const psa_key_attributes_t *attributes,
     uint8_t *data, size_t data_size, size_t *data_length)
 {
+    if (attributes->domain_parameters == NULL &&
+        attributes->domain_parameters_size == SIZE_MAX) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+
     if (attributes->domain_parameters_size > data_size) {
         return PSA_ERROR_BUFFER_TOO_SMALL;
     }