diff --git a/lib/sensu/constants.rb b/lib/sensu/constants.rb
index <HASH>..<HASH> 100644
--- a/lib/sensu/constants.rb
+++ b/lib/sensu/constants.rb
@@ -1,9 +1,12 @@
 module Sensu
   unless defined?(Sensu::VERSION)
+    # Sensu release version.
     VERSION = "0.17.0.beta"
 
+    # Sensu check severities.
     SEVERITIES = %w[ok warning critical unknown]
 
+    # Process signals that trigger a Sensu process stop.
     STOP_SIGNALS = %w[INT TERM]
   end
 end
[refactoring] documented constants