diff --git a/lib/docs/scrapers/rdoc/ruby.rb b/lib/docs/scrapers/rdoc/ruby.rb
index ed7891b4eb..7398a1a069 100644
--- a/lib/docs/scrapers/rdoc/ruby.rb
+++ b/lib/docs/scrapers/rdoc/ruby.rb
@@ -3,7 +3,7 @@ class Ruby < Rdoc
     # Instructions:
     #   1. Download Ruby's source code
     #   2. Run "./configure && make html" (in the Ruby directory)
-    #   3. Copy the ".ext/html" directory to "docs/ruby~[version]"
+    #   3. Copy the contents of the ".ext/html" directory to "docs/ruby~[version]"
 
     include FixInternalUrlsBehavior
 
@@ -41,25 +41,19 @@ class Ruby < Rdoc
       /\ADEBUGGER__/,
       /\AException2MessageMapper/,
       /\AJSON\/Ext/,
-      /\AGem/,
       /\AHTTP/i,
-      /\AIRB/,
       /\AMakeMakefile/i,
       /\ANQXML/,
       /\APride/,
       /\AProfiler__/,
-      /\APsych\//,
       /\ARacc/,
       /\ARake/,
       /\ARbConfig/,
       /\ARDoc/,
       /\AREXML/,
-      /\ARSS/,
       /\AShell\//,
       /\ATest/,
-      /\AWEBrick/,
       /win32/i,
-      /\AXML/,
       /\AXMP/]
 
     options[:attribution] = <<-HTML