diff --git a/src/AnnotatedCommand.php b/src/AnnotatedCommand.php
index 320cae6..1d8b35f 100644
--- a/src/AnnotatedCommand.php
+++ b/src/AnnotatedCommand.php
@@ -160,6 +160,7 @@ public function getExampleUsages()
 
     public function addUsageOrExample($usage, $description)
     {
+        $usage = htmlentities($usage);
         $this->addUsage($usage);
         if (!empty($description)) {
             $this->examples[$usage] = $description;