diff --git a/prelude.rb b/prelude.rb
index 82c7820530..159d8af287 100644
--- a/prelude.rb
+++ b/prelude.rb
@@ -19,15 +19,15 @@ class Binding
     ui.level = "silent"
     Bundler.ui = ui
 
-    @builder = Bundler::Dsl.new
+    builder = Bundler::Dsl.new
     if Bundler.definition.gemfiles.empty? # bundler/inline
-      Bundler.definition.locked_gems.specs.each{|spec| @builder.gem spec.name, spec.version.to_s }
+      Bundler.definition.locked_gems.specs.each{|spec| builder.gem spec.name, spec.version.to_s }
     else
-      Bundler.definition.gemfiles.each{|gemfile| @builder.eval_gemfile(gemfile) }
+      Bundler.definition.gemfiles.each{|gemfile| builder.eval_gemfile(gemfile) }
     end
-    @builder.gem gem
+    builder.gem gem
 
-    definition = @builder.to_definition(nil, true)
+    definition = builder.to_definition(nil, true)
     definition.validate_runtime!
     orig_no_lock = Bundler::Definition.no_lock
     Bundler::Definition.no_lock = true