diff --git a/lib/pry/pry_instance.rb b/lib/pry/pry_instance.rb
index 9d9db3a6..e5be2bf5 100644
--- a/lib/pry/pry_instance.rb
+++ b/lib/pry/pry_instance.rb
@@ -97,13 +97,15 @@ class Pry
     attributes = [
                    :input, :output, :commands, :print, :quiet,
                    :exception_handler, :hooks, :custom_completions,
-                   :prompt, :memory_size, :input_stack, :extra_sticky_locals
+                   :prompt, :memory_size, :extra_sticky_locals
                  ]
 
     attributes.each do |attribute|
       defaults[attribute] = Pry.send attribute
     end
 
+    defaults[:input_stack] = Pry.input_stack.dup
+
     defaults.merge!(options).each do |key, value|
       send("#{key}=", value) if respond_to?("#{key}=")
     end