diff --git a/lib/amplia-client.js b/lib/amplia-client.js
index e487516..eecdb49 100644
--- a/lib/amplia-client.js
+++ b/lib/amplia-client.js
@@ -240,7 +240,7 @@ class AmpliaClient {
 	 * @param {string} orderId the ID of the desired order
 	 * @param {string} password the password for the certificate
 	 * @param {number} keySize the size of the key for this certificate
-	 * @returns {IssueSoftwareCertificateResponse} the response containing the certificate in many formats
+	 * @returns {Promise<IssueSoftwareCertificateResponse>} the response containing the certificate in many formats
 	 */
 	issueSoftwareCertificate(orderId, password, keySize = null) {
 		return new Promise((resolve, reject) => {