diff --git a/lib/roles/provider.js b/lib/roles/provider.js
index d343611e..b664c5f5 100644
--- a/lib/roles/provider.js
+++ b/lib/roles/provider.js
@@ -114,7 +114,7 @@ module.exports = function(options) {
     if (isConnected(device)) {
       pushDeviceStatus(device, 'absent')
       log.info('Releasing worker of %s', device.id)
-      gracefullyKillWorker(device.id, function() { /* noop */ })
+      gracefullyKillWorker(device.id)
       return true
     }
     return false