Fix logic
diff --git a/config/setupmymac b/config/setupmymac
index 560adae..ef4ef35 100755
--- a/config/setupmymac
+++ b/config/setupmymac
@@ -371,7 +371,7 @@
   snippet += "PassengerUser #{user}\nPassengerGroup #{group}\n"
 end
 
-unless File.exist?(passenger_conf) or File.read(passenger_conf) != snippet
+if !File.exist?(passenger_conf) or File.read(passenger_conf) != snippet
   sudo do
     color "$ sudo edit #{passenger_conf}"
     File.write passenger_conf, snippet unless $dry_run