diff --git a/src/Core/Worker.php b/src/Core/Worker.php
index 036f065d4..69ca6004c 100644
--- a/src/Core/Worker.php
+++ b/src/Core/Worker.php
@@ -31,6 +31,13 @@ use Friendica\Util\DateTimeFormat;
  */
 class Worker
 {
+	const PRIORITY_UNDEFINED  = PRIORITY_UNDEFINED;
+	const PRIORITY_CRITICAL   = PRIORITY_CRITICAL;
+	const PRIORITY_HIGH       = PRIORITY_HIGH;
+	const PRIORITY_MEDIUM     = PRIORITY_MEDIUM;
+	const PRIORITY_LOW        = PRIORITY_LOW;
+	const PRIORITY_NEGLIGIBLE = PRIORITY_NEGLIGIBLE;
+
 	const STATE_STARTUP    = 1; // Worker is in startup. This takes most time.
 	const STATE_LONG_LOOP  = 2; // Worker is processing the whole - long - loop.
 	const STATE_REFETCH    = 3; // Worker had refetched jobs in the execution loop.
diff --git a/static/defaults.config.php b/static/defaults.config.php
index b199b055b..f20b333dd 100644
--- a/static/defaults.config.php
+++ b/static/defaults.config.php
@@ -653,11 +653,11 @@ return [
 		// worker_max_duration (Array)
 		// Maximum runtime per priority. Worker processes that exceed this runtime will be terminated.
 		'worker_max_duration' => [
-			PRIORITY_CRITICAL   => 720,
-			PRIORITY_HIGH       => 10,
-			PRIORITY_MEDIUM     => 60,
-			PRIORITY_LOW        => 180,
-			PRIORITY_NEGLIGIBLE => 720
+			Friendica\Core\Worker::PRIORITY_CRITICAL   => 720,
+			Friendica\Core\Worker::PRIORITY_HIGH       => 10,
+			Friendica\Core\Worker::PRIORITY_MEDIUM     => 60,
+			Friendica\Core\Worker::PRIORITY_LOW        => 180,
+			Friendica\Core\Worker::PRIORITY_NEGLIGIBLE => 720
 		],
 
 		// worker_processes_cooldown (Integer)