diff --git a/classes/local/execution/logging/mtrace_handler.php b/classes/local/execution/logging/mtrace_handler.php
index 65efb6c7..cf6ff628 100644
--- a/classes/local/execution/logging/mtrace_handler.php
+++ b/classes/local/execution/logging/mtrace_handler.php
@@ -43,6 +43,10 @@ public function handle(array $record): bool {
         return $this->handler->handle($record);
     }
 
+    /**
+     * @param array $record
+     * @return void
+     */
     protected function write(array $record): void {
         // TODO: Implement write() method.
     }