diff --git a/Lib/ruby/std_unordered_multiset.i b/Lib/ruby/std_unordered_multiset.i
index 29fa73a98..181aa212d 100644
--- a/Lib/ruby/std_unordered_multiset.i
+++ b/Lib/ruby/std_unordered_multiset.i
@@ -4,7 +4,7 @@
 
 %include <std_unordered_set.i>
 
-%fragment("StdUnorderedMultisetTraits","header",fragment="StdSequenceTraits")
+%fragment("StdUnorderedMultisetTraits","header",fragment="StdUnorderedSetTraits")
 %{
   namespace swig {
     template <class RubySeq, class T>
diff --git a/Lib/ruby/std_unordered_set.i b/Lib/ruby/std_unordered_set.i
index 5279bbed5..3d4494351 100644
--- a/Lib/ruby/std_unordered_set.i
+++ b/Lib/ruby/std_unordered_set.i
@@ -4,7 +4,7 @@
 
 %include <std_set.i>
 
-%fragment("StdUnorderedSetTraits","header",fragment="<stddef.h>",fragment="StdSequenceTraits")
+%fragment("StdUnorderedSetTraits","header",fragment="<stddef.h>",fragment="StdSetTraits")
 %{
   namespace swig {
     template <class RubySeq, class T>