diff --git a/lib/ripl/rc/squeeze_history.rb b/lib/ripl/rc/squeeze_history.rb
index <HASH>..<HASH> 100644
--- a/lib/ripl/rc/squeeze_history.rb
+++ b/lib/ripl/rc/squeeze_history.rb
@@ -26,6 +26,7 @@ module Ripl::Rc::SqueezeHistory
     super
   end
 
+  # avoid double initialization for history
   def before_loop
     return super if SqueezeHistory.disabled?
     super if history.empty?
comment: # avoid double initialization for history