1 files changed, 6 insertions, 0 deletions
diff --git a/prelude.rb b/prelude.rb
index c0a8dfccfa..a693f46156 100644
--- a/prelude.rb
+++ b/prelude.rb
@@ -140,6 +140,9 @@ class Binding
     require 'irb'
     irb
   end
+
+  # suppress redefinition warning
+  alias irb irb # :nodoc:
 end
 
 module Kernel
@@ -150,4 +153,7 @@ module Kernel
     require 'pp'
     pp(*objs)
   end
+
+  # suppress redefinition warning
+  alias pp pp # :nodoc:
 end