diff --git a/programs/cube.lua b/programs/cube.lua
index 08cb0ac..9247a69 100644
--- a/programs/cube.lua
+++ b/programs/cube.lua
@@ -178,7 +178,7 @@ local function rebootCommand(machineId, silentReboot)
   for k in ipairs(results) do
     local packet = packets[k];
 
-    if not silentReboot == true then
+    if silentReboot ~= true then
       print('reboot machine \'' .. tostring(packet.sourceId) .. '\'');
     end
   end