diff --git a/Lib/ruby/std_set.i b/Lib/ruby/std_set.i
index f5d203724..f4d15e8ec 100644
--- a/Lib/ruby/std_set.i
+++ b/Lib/ruby/std_set.i
@@ -168,6 +168,15 @@ iterator, reverse_iterator {
 			       swig::Iterator::descriptor(),SWIG_POINTER_OWN);
  }
 
+// Redefine std::set std::pair<iterator, bool> typemap
+  %typemap(out,noblock=1,fragment="RubyPairBoolOutputIterator")
+  std::pair<iterator, bool> {
+    $result = rb_ary_new2(2);
+    RARRAY_PTR($result)[0] = SWIG_NewPointerObj(swig::make_set_nonconst_iterator(%static_cast($1,$type &).first),
+						swig::Iterator::descriptor(),SWIG_POINTER_OWN);    
+    RARRAY_PTR($result)[1] = SWIG_From(bool)(%static_cast($1,const $type &).second);
+    RARRAY_LEN($result) = 2;
+   }
 
   %extend  {
     %alias push "<<";