1 files changed, 2 insertions, 3 deletions
diff --git a/tool/rdoc-srcdir b/tool/rdoc-srcdir
index f830fdc302..417a057d7f 100755
--- a/tool/rdoc-srcdir
+++ b/tool/rdoc-srcdir
@@ -1,7 +1,6 @@
 #!ruby -W0
 
-rdoc_path = Dir.glob("#{File.dirname(__dir__)}/.bundle/gems/rdoc-*").first
-$LOAD_PATH.unshift("#{rdoc_path}/lib")
+require 'rubygems'
 require 'rdoc/rdoc'
 
 # Make only the output directory relative to the invoked directory.
@@ -17,7 +16,7 @@ options.title = options.title.sub(/Ruby \K.*version/) {
     .sort # "MAJOR" < "MINOR", fortunately
     .to_h.values.join(".")
 }
-options.parse ARGV
+options.parse ARGV + ["#{invoked}/rbconfig.rb"]
 
 options.singleton_class.define_method(:finish) do
   super()