diff --git a/lib/cstruct.rb b/lib/cstruct.rb
index dc30f36..5fb5a7f 100644
--- a/lib/cstruct.rb
+++ b/lib/cstruct.rb
@@ -1 +1 @@
-require 'cstruct/cstruct'
+require_relative 'cstruct/cstruct'
diff --git a/lib/cstruct/cstruct.rb b/lib/cstruct/cstruct.rb
index 491ce75..56becaf 100755
--- a/lib/cstruct/cstruct.rb
+++ b/lib/cstruct/cstruct.rb
@@ -231,6 +231,7 @@ def << bindata
     (0...count).each do |i|
       Utils.string_setbyte @data,i,Utils.string_getbyte(bindata,i)
     end
+    self
   end
     
   def sync_to_owner #:nodoc: