diff --git a/lib/pry/config/behavior.rb b/lib/pry/config/behavior.rb
index 1cb98da5..d2669dde 100644
--- a/lib/pry/config/behavior.rb
+++ b/lib/pry/config/behavior.rb
@@ -54,7 +54,7 @@ module Pry::Config::Behavior
       value = @default.public_send(name, *args, &block)
       # FIXME: refactor Pry::Hook so that it stores config on the config object,
       # so that we can use the normal strategy.
-      self[key] = value.dup if key == 'hooks'
+      self[key] = value = value.dup if key == 'hooks'
       value
     else
       nil
diff --git a/spec/config_spec.rb b/spec/config_spec.rb
index 228f30dc..054c49a0 100644
--- a/spec/config_spec.rb
+++ b/spec/config_spec.rb
@@ -28,6 +28,14 @@ describe Pry::Config do
       local3 = Pry::Config.new(local2)
       local3.foo.should == 21
     end
+
+    it "stores a local copy of the parent's hooks upon accessing them" do
+      parent = Pry::Config.from_hash(hooks: "parent_hooks")
+      local  = Pry::Config.new parent
+      local.hooks.gsub! 'parent', 'local'
+      local.hooks.should == 'local_hooks'
+      parent.hooks.should == 'parent_hooks'
+    end
   end
 
   describe ".from_hash" do