diff --git a/lib/mina/rails.rb b/lib/mina/rails.rb
index d068b2b3..2f882afc 100644
--- a/lib/mina/rails.rb
+++ b/lib/mina/rails.rb
@@ -13,7 +13,7 @@
   task name, [:arguments] => :environment do |t, args|
     arguments = args[:arguments]
     command = send name
-    unless command
+    unless arguments
       puts %{You need to provide arguments. Try: mina "#{name}[#{sample_args}]"}
       exit 1
     end