diff --git a/tests/Utils/TaskSchedule/CronTest.php b/tests/Utils/TaskSchedule/CronTest.php
index c40f4c9b5..358b44c14 100755
--- a/tests/Utils/TaskSchedule/CronTest.php
+++ b/tests/Utils/TaskSchedule/CronTest.php
@@ -16,6 +16,7 @@ namespace phpOMS\tests\Utils\TaskSchedule;
 
 use phpOMS\Utils\TaskSchedule\Cron;
 use phpOMS\Utils\TaskSchedule\CronJob;
+use phpOMS\Utils\TaskSchedule\SchedulerAbstract;
 
 /**
  * @testdox phpOMS\tests\Utils\TaskSchedule\CronTest: Cron handler
@@ -31,6 +32,12 @@ final class CronTest extends \PHPUnit\Framework\TestCase
               'The OS is not linux.'
             );
         }
+
+        if (!SchedulerAbstract::guessBin()) {
+            $this->markTestSkipped(
+                'No scheduler available'
+              );
+        }
     }
 
     // * * * * * echo "test" > __DIR__ . '/cronjob.log' // evaluate dir
diff --git a/tests/Utils/TaskSchedule/TaskSchedulerTest.php b/tests/Utils/TaskSchedule/TaskSchedulerTest.php
index b0cac3981..00f6c5531 100755
--- a/tests/Utils/TaskSchedule/TaskSchedulerTest.php
+++ b/tests/Utils/TaskSchedule/TaskSchedulerTest.php
@@ -15,6 +15,7 @@ declare(strict_types=1);
 namespace phpOMS\tests\Utils\TaskSchedule;
 
 use phpOMS\Utils\TaskSchedule\Schedule;
+use phpOMS\Utils\TaskSchedule\SchedulerAbstract;
 use phpOMS\Utils\TaskSchedule\TaskScheduler;
 
 /**
@@ -31,6 +32,12 @@ final class TaskSchedulerTest extends \PHPUnit\Framework\TestCase
               'The OS is not windows.'
             );
         }
+
+        if (!SchedulerAbstract::guessBin()) {
+            $this->markTestSkipped(
+                'No scheduler available'
+              );
+        }
     }
 
     /**