diff --git a/slack-mathbot.rb b/slack-mathbot.rb
index a13c570..540dd6d 100644
--- a/slack-mathbot.rb
+++ b/slack-mathbot.rb
@@ -1,3 +1,4 @@
+require Math
 require 'slack-ruby-bot'
 require 'slack-mathbot/version'
 require 'slack-mathbot/about'
diff --git a/slack-mathbot/commands/calculate.rb b/slack-mathbot/commands/calculate.rb
index 2a961ea..0168a80 100644
--- a/slack-mathbot/commands/calculate.rb
+++ b/slack-mathbot/commands/calculate.rb
@@ -1,5 +1,3 @@
-require Math
-
 module SlackMathbot
   module Commands
     class Calculate < SlackRubyBot::Commands::Base