diff --git a/lib/clilib.php b/lib/clilib.php
index 1495aedab9e..6cc767fa5a9 100644
--- a/lib/clilib.php
+++ b/lib/clilib.php
@@ -154,7 +154,7 @@ function cli_get_params(array $longoptions, array $shortmapping=null) {
  * @param string $suffix process suffix
  */
 function cli_set_process_title_suffix(string $suffix) {
-    if (defined('CLI_SCRIPT') && isset($_SERVER['argv'])) {
+    if (CLI_SCRIPT && function_exists('cli_set_process_title') && isset($_SERVER['argv'])) {
         $command = join(' ', $_SERVER['argv']);
         @cli_set_process_title("php $command ($suffix)");
     }
diff --git a/lib/cronlib.php b/lib/cronlib.php
index 919043d4e2f..74a83d5b1d7 100644
--- a/lib/cronlib.php
+++ b/lib/cronlib.php
@@ -383,7 +383,7 @@ function cron_run_inner_adhoc_task(\core\task\adhoc_task $task) {
  */
 function cron_set_process_title(string $title) {
     global $CFG;
-    if (defined('CLI_SCRIPT')) {
+    if (CLI_SCRIPT) {
         require_once($CFG->libdir . '/clilib.php');
         $datetime = userdate(time(), '%b %d, %H:%M:%S');
         cli_set_process_title_suffix("$datetime $title");