diff --git a/space.gemspec b/space.gemspec
index 3c81402..9d6eea2 100644
--- a/space.gemspec
+++ b/space.gemspec
@@ -13,8 +13,8 @@ Gem::Specification.new do |s|
   s.description   = "space."
 
   s.files         = Dir.glob("{lib/**/*,[A-Z]*}")
-  s.executables   = 'space'
   s.platform      = Gem::Platform::RUBY
+  s.executables   = ['space']
   s.require_paths = ['lib']
   s.rubyforge_project = '[none]'
 end