diff --git a/healthcheck.js b/healthcheck.js
index e179299..05dedba 100644
--- a/healthcheck.js
+++ b/healthcheck.js
@@ -35,13 +35,13 @@ axios
     process.exit(1)
   })
 
-async function notify(message) {
+async function notify (message) {
   console.log(message)
   if (shouldSendEmail) await sendMail(message)
   if (shouldPostToWebHook) await postToWebHook(message)
 }
 
-async function postToWebHook(text) {
+async function postToWebHook (text) {
   await axios
     .post(process.env.HEALTH_CHECK_WEB_HOOK, { text })
     .catch((error) => {
@@ -49,7 +49,7 @@ async function postToWebHook(text) {
     })
 }
 
-async function sendMail(message) {
+async function sendMail (message) {
   const messageParams = {
     from: process.env.HEALTH_CHECK_EMAIL_FROM,
     to: process.env.HEALTH_CHECK_EMAIL_RECIPIENT,
diff --git a/src/app.js b/src/app.js
index 6b7899d..3adfe77 100644
--- a/src/app.js
+++ b/src/app.js
@@ -34,8 +34,7 @@ export async function build (opts = {}) {
         `${req.protocol}://${req.headers.host}/instance/${defaultTenantName}/credentials/issue`,
         getUnsignedVC()
       )
-      if (!data.proof)
-        throw new SigningException(503, 'issuer-coordinator healthz failed')
+      if (!data.proof) { throw new IssuingException(503, 'issuer-coordinator healthz failed') }
     } catch (e) {
       console.log(`exception in healthz: ${JSON.stringify(e)}`)
       return res.status(503).json({