diff --git a/mdt/command.py b/mdt/command.py
index f2f54bc..f950477 100644
--- a/mdt/command.py
+++ b/mdt/command.py
@@ -63,7 +63,10 @@
             self.discoverer.discover()
 
         if not self.address:
-            print('Unable to find a device called {0} on your local network segment.'.format(self.device))
+            if not self.device:
+                print('Unable to find any devices on your local network segment.')
+            else:
+                print('Unable to find a device called {0} on your local network segment.'.format(self.device))
             return 1
 
         client = None