diff --git a/plugins/Unix/test.py b/plugins/Unix/test.py
index b51cd8397..8f67ce351 100644
--- a/plugins/Unix/test.py
+++ b/plugins/Unix/test.py
@@ -66,7 +66,8 @@ if os.name == 'posix':
 
         if utils.findBinaryInPath('ping') is not None:
             def testPing(self):
-                self.assertNotError('ping')
+                self.assertNotError('unix ping localhost')
+                self.assertError('unix ping')