diff --git a/struct.c b/struct.c
index f68c496728..e9d9460436 100644
--- a/struct.c
+++ b/struct.c
@@ -211,24 +211,6 @@ rb_struct_s_members_m(VALUE klass)
     return rb_ary_dup(members);
 }
 
-/*
- *  call-seq:
- *    members -> array_of_symbols
- *
- *  Returns the member names from +self+ as an array:
- *
- *     Customer = Struct.new(:name, :address, :zip)
- *     Customer.new.members # => [:name, :address, :zip]
- *
- *  Related: #to_a.
- */
-
-static VALUE
-rb_struct_members_m(VALUE obj)
-{
-    return rb_struct_s_members_m(rb_obj_class(obj));
-}
-
 VALUE
 rb_struct_getmember(VALUE obj, ID id)
 {
@@ -1751,7 +1733,6 @@ rb_data_s_def(int argc, VALUE *argv, VALUE klass)
 
 #define rb_data_s_members_m rb_struct_s_members_m
 
-
 /*
  * call-seq:
  *   new(*args) -> instance
@@ -2024,21 +2005,6 @@ rb_data_inspect(VALUE s)
 
 #define rb_data_to_h rb_struct_to_h
 
-/*
- *  call-seq:
- *    members -> array_of_symbols
- *
- *  Returns the member names from +self+ as an array:
- *
- *     Measure = Data.define(:amount, :unit)
- *     distance = Measure[10, 'km']
- *
- *     distance.members #=> [:amount, :unit]
- *
- */
-
-#define rb_data_members_m rb_struct_members_m
-
 /*
  *  call-seq:
  *    deconstruct     -> array
@@ -2244,7 +2210,6 @@ InitVM_Struct(void)
     rb_define_method(rb_cStruct, "filter", rb_struct_select, -1);
     rb_define_method(rb_cStruct, "values_at", rb_struct_values_at, -1);
 
-    rb_define_method(rb_cStruct, "members", rb_struct_members_m, 0);
     rb_define_method(rb_cStruct, "dig", rb_struct_dig, -1);
 
     rb_define_method(rb_cStruct, "deconstruct", rb_struct_to_a, 0);
@@ -2269,9 +2234,7 @@ InitVM_Struct(void)
 
     rb_define_method(rb_cData, "inspect", rb_data_inspect, 0);
     rb_define_alias(rb_cData,  "to_s", "inspect");
-    rb_define_method(rb_cData, "to_h", rb_data_to_h, 0);
-
-    rb_define_method(rb_cData, "members", rb_data_members_m, 0);
+    rb_define_method(rb_cData, "to_h", rb_data_to_h, 0);    
 
     rb_define_method(rb_cData, "deconstruct", rb_data_deconstruct, 0);
     rb_define_method(rb_cData, "deconstruct_keys", rb_data_deconstruct_keys, 1);
diff --git a/test/ruby/test_data.rb b/test/ruby/test_data.rb
index 3cafb365ed..b0fde8ed60 100644
--- a/test/ruby/test_data.rb
+++ b/test/ruby/test_data.rb
@@ -108,7 +108,6 @@ def test_instance_behavior
     test = klass.new(1, 2)
     assert_equal(1, test.foo)
     assert_equal(2, test.bar)
-    assert_equal(%i[foo bar], test.members)
     assert_equal(1, test.public_send(:foo))
     assert_equal(0, test.method(:foo).arity)
     assert_equal([], test.method(:foo).parameters)
@@ -226,7 +225,6 @@ def test_memberless
     assert_not_equal(Data.define.new, test)
 
     assert_equal('#<data >', test.inspect)
-    assert_equal([], test.members)
     assert_equal({}, test.to_h)
   end
 
diff --git a/test/ruby/test_struct.rb b/test/ruby/test_struct.rb
index 78a81c5200..fab1609e4b 100644
--- a/test/ruby/test_struct.rb
+++ b/test/ruby/test_struct.rb
@@ -71,8 +71,7 @@ def test_attrset_id
   def test_members
     klass = @Struct.new(:a)
     o = klass.new(1)
-    assert_equal([:a], klass.members)
-    assert_equal([:a], o.members)
+    assert_equal([:a], klass.members)    
   end
 
   def test_ref
@@ -97,7 +96,7 @@ def test_struct_new
     assert_nothing_raised { @Struct.new(:a) { } }
     assert_raise(RuntimeError) { @Struct.new(:a) { raise } }
 
-    assert_equal([:utime, :stime, :cutime, :cstime], Process.times.members)
+    assert_equal([:utime, :stime, :cutime, :cstime], Process.times.class.members)
   end
 
   def test_struct_new_with_hash