diff --git a/lib/hub/commands.rb b/lib/hub/commands.rb
index 9feb17f1b8bb19c586e08a31744d4d15c86c5e98..c285fa4ba50ce9917748178a98a922f286974133 100644
--- a/lib/hub/commands.rb
+++ b/lib/hub/commands.rb
@@ -499,7 +499,7 @@ help
     #
     # Returns a Boolean.
     def command?(name)
-      `type -t #{command}`
+      `type -t #{name}`
       $?.success?
     end