diff --git a/slack-mathbot/commands.rb b/slack-mathbot/commands.rb
index defec04..d6975c4 100644
--- a/slack-mathbot/commands.rb
+++ b/slack-mathbot/commands.rb
@@ -1,3 +1,4 @@
 require 'slack-mathbot/commands/calculate'
 require 'slack-mathbot/commands/about'
 require 'slack-mathbot/commands/help'
+require 'slack-mathbot/commands/echo'