diff --git a/eval.c b/eval.c
index 5fe00e1..22a0a60 100644
--- a/eval.c
+++ b/eval.c
@@ -347,6 +347,20 @@ rb_mod_s_constants(int argc, VALUE *argv, VALUE mod)
     return rb_const_list(data);
 }
 
+/*
+ *  call-seq:
+ *     Module.current -> Module
+ *
+ *  Returns "current class".
+ */
+
+VALUE rb_vm_cref_cls(void);
+static VALUE
+rb_mod_current(void)
+{
+    return rb_vm_cref_cls();
+}
+
 void
 rb_frozen_class_p(VALUE klass)
 {
@@ -1144,6 +1158,8 @@ Init_eval(void)
     rb_define_singleton_method(rb_cModule, "nesting", rb_mod_nesting, 0);
     rb_define_singleton_method(rb_cModule, "constants", rb_mod_s_constants, -1);
 
+    rb_define_singleton_method(rb_cModule, "current", rb_mod_current, 0);
+
     rb_define_singleton_method(rb_vm_top_self(), "include", top_include, -1);
 
     rb_define_method(rb_mKernel, "extend", rb_obj_extend, -1);
diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index ce6e8a6..b6277dc 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -1000,4 +1000,28 @@ class TestModule < Test::Unit::TestCase
     INPUT
     assert_in_out_err([], src, %w(Object :ok), [])
   end
+
+  class ModuleCurrentTestModule1
+    CURRENT = Module.current
+
+    def self.foo
+      Module.current
+    end
+
+    def foo
+      Module.current
+    end
+  end
+
+  def test_module_current
+    assert_equal(TestModule, Module.current)
+    assert_equal(ModuleCurrentTestModule1, ModuleCurrentTestModule1::CURRENT)
+    assert_equal(ModuleCurrentTestModule1, ModuleCurrentTestModule1.foo)
+    module_current_test = ModuleCurrentTestModule1.new
+    assert_equal(ModuleCurrentTestModule1, module_current_test.foo)
+    foo = ModuleCurrentTestModule1.module_eval{Module.current}
+    assert_equal(ModuleCurrentTestModule1, foo)
+    foo = ModuleCurrentTestModule1.instance_eval{Module.current}
+    assert_equal("#<Class:TestModule::ModuleCurrentTestModule1>", foo.to_s)
+  end
 end
diff --git a/vm.c b/vm.c
index d0c2592..03f15e7 100644
--- a/vm.c
+++ b/vm.c
@@ -827,6 +827,12 @@ rb_vm_cref(void)
     return vm_get_cref(cfp->iseq, cfp->lfp, cfp->dfp);
 }
 
+VALUE
+rb_vm_cref_cls(void)
+{
+    return rb_vm_cref()->nd_clss;
+}
+
 #if 0
 void
 debug_cref(NODE *cref)