diff --git a/server/util-server.js b/server/util-server.js
index 60d8baac..d9741a7c 100644
--- a/server/util-server.js
+++ b/server/util-server.js
@@ -445,12 +445,16 @@ const parseCertificateInfo = function (info) {
 
         // Move up the chain until loop is encountered
         if (link.issuerCertificate == null) {
+            link.certType = (i === 0) ? "self-signed" : "root CA";
             break;
         } else if (link.issuerCertificate.fingerprint in existingList) {
+            // a root CA certificate is typically "signed by itself"  (=> "self signed certificate") and thus the "issuerCertificate" is a reference to itself.
             log.debug("cert", `[Last] ${link.issuerCertificate.fingerprint}`);
+            link.certType = (i === 0) ? "self-signed" : "root CA";
             link.issuerCertificate = null;
             break;
         } else {
+            link.certType = (i === 0) ? "server" : "intermediate CA";
             link = link.issuerCertificate;
         }