diff --git a/PHPCI/Helper/SshKey.php b/PHPCI/Helper/SshKey.php
index 77c4a64a..4c625ff4 100644
--- a/PHPCI/Helper/SshKey.php
+++ b/PHPCI/Helper/SshKey.php
@@ -45,7 +45,7 @@ class SshKey
 
     public function canGenerateKeys()
     {
-        $keygen = @shell_exec('ssh-keygen');
+        $keygen = @shell_exec('ssh-keygen -h');
         $canGenerateKeys = !empty($keygen);
 
         return $canGenerateKeys;