https://bugzilla.redhat.com/show_bug.cgi?id=1564537

--- httpd-2.4.33/modules/ssl/ssl_engine_init.c.sslmerging
+++ httpd-2.4.33/modules/ssl/ssl_engine_init.c
@@ -261,7 +261,8 @@
          * the protocol is https. */
         if (ap_get_server_protocol(s) 
             && strcmp("https", ap_get_server_protocol(s)) == 0
-            && sc->enabled == SSL_ENABLED_UNSET) {
+            && sc->enabled == SSL_ENABLED_UNSET
+            && (!apr_is_empty_array(sc->server->pks->cert_files))) {
             sc->enabled = SSL_ENABLED_TRUE;
         }