diff --git a/mrblib/compar.rb b/mrblib/compar.rb
index 974ad5036c..3badf57ded 100644
--- a/mrblib/compar.rb
+++ b/mrblib/compar.rb
@@ -1,63 +1,68 @@
-### move to compar.c
-# module Comparable
-  # def == other
-  #   cmp = self <=> other
-  #   if cmp == 0
-  #     true
-  #   else
-  #     false
-  #   end
-  # end
+module Comparable
+  # 15.3.3.2.1
+  def < other
+    cmp = self <=> other
+    if cmp.nil?
+      false
+    elsif cmp < 0
+      true
+    else
+      false
+    end
+  end
 
-  # def < other
-  #   cmp = self <=> other
-  #   if cmp.nil?
-  #     false
-  #   elsif cmp < 0
-  #     true
-  #   else
-  #     false
-  #   end
-  # end
+  # 15.3.3.2.2
+  def <= other
+    cmp = self <=> other
+    if cmp.nil?
+      false
+    elsif cmp <= 0
+      true
+    else
+      false
+    end
+  end
 
-  # def <= other
-  #   cmp = self <=> other
-  #   if cmp.nil?
-  #     false
-  #   elsif cmp <= 0
-  #     true
-  #   else
-  #     false
-  #   end
-  # end
+  # 15.3.3.2.3
+  def == other
+    cmp = self <=> other
+    if cmp == 0
+      true
+    else
+      false
+    end
+  end
 
-  # def > other
-  #   cmp = self <=> other
-  #   if cmp.nil?
-  #     false
-  #   elsif cmp > 0
-  #     true
-  #   else
-  #     false
-  #   end
-  # end
+  # 15.3.3.2.4
+  def > other
+    cmp = self <=> other
+    if cmp.nil?
+      false
+    elsif cmp > 0
+      true
+    else
+      false
+    end
+  end
 
-  # def >= other
-  #   cmp = self <=> other
-  #   if cmp.nil?
-  #     false
-  #   elsif cmp >= 0
-  #     true
-  #   else
-  #     false
-  #   end
-  # end
+  # 15.3.3.2.5
+  def >= other
+     cmp = self <=> other
+    if cmp.nil?
+      false
+    elsif cmp >= 0
+      true
+    else
+      false
+    end
+  end
 
-  # def between?(min,max)
-  #   if self < min or self > max
-  #     false
-  #   else
-  #     true
-  #   end
-  # end
-# end
+  # 15.3.3.2.6
+  def between?(min,max)
+    if self < min or self > max
+      false
+    else
+      true
+    end
+  end
+end
diff --git a/src/compar.c b/src/compar.c
index bcd77867ea..1502d450b2 100644
--- a/src/compar.c
+++ b/src/compar.c
@@ -15,7 +15,6 @@ mrb_cmperr(mrb_state *mrb, mrb_value x, mrb_value y)
 
   if (SPECIAL_CONST_P(y)) {
     y = mrb_inspect(mrb, y);
-    //classname = StringValuePtr(y);
     classname = mrb_string_value_ptr(mrb, y);
   }
   else {
@@ -42,109 +41,8 @@ mrb_cmpint(mrb_state *mrb, mrb_value val, mrb_value a, mrb_value b)
   return 0;
 }
 
-static mrb_value
-cmp_equal(mrb_state *mrb, mrb_value x)
-{
-  mrb_value y, c;
-
-  /* *** TEMPORAL IMPLEMENT *** */
-
-  mrb_get_args(mrb, "o", &y);
-  if (mrb_obj_equal(mrb, x, y)) return mrb_true_value();
-
-  c = mrb_funcall(mrb, x, "<=>", 1, y);
-
-  if (mrb_cmpint(mrb, c, x, y) == 0) return mrb_true_value();
-  return mrb_false_value();
-}
-
-#include <stdio.h>
-static mrb_value
-cmp_gt(mrb_state *mrb, mrb_value x, mrb_value y)
-{
-  mrb_value c;
-
-  c = mrb_funcall(mrb, x, "<=>", 1, y);
-
-  if (mrb_cmpint(mrb, c, x, y) > 0) return mrb_true_value();
-  return mrb_false_value();
-}
-
-static mrb_value
-cmp_gt_m(mrb_state *mrb, mrb_value x)
-{
-  mrb_value y;
-
-  mrb_get_args(mrb, "o", &y);
-  return cmp_gt(mrb, x, y);
-}
-
-static mrb_value
-cmp_ge_m(mrb_state *mrb, mrb_value x)
-{
-  mrb_value y, c;
-
-  mrb_get_args(mrb, "o", &y);
-  c = mrb_funcall(mrb, x, "<=>", 1, y);
-
-  if (mrb_cmpint(mrb, c, x, y) >= 0) return mrb_true_value();
-  return mrb_false_value();
-}
-
-static mrb_value
-cmp_lt(mrb_state *mrb, mrb_value x, mrb_value y)
-{
-  mrb_value c;
-
-  c = mrb_funcall(mrb, x, "<=>", 1, y);
-
-  if (mrb_cmpint(mrb, c, x, y) < 0) return mrb_true_value();
-  return mrb_false_value();
-}
-
-static mrb_value
-cmp_lt_m(mrb_state *mrb, mrb_value x)
-{
-  mrb_value y;
-
-  mrb_get_args(mrb, "o", &y);
-  return cmp_lt(mrb, x, y);
-}
-
-static mrb_value
-cmp_le_m(mrb_state *mrb, mrb_value x)
-{
-  mrb_value y, c;
-
-  mrb_get_args(mrb, "o", &y);
-  c = mrb_funcall(mrb, x, "<=>", 1, y);
-
-  if (mrb_cmpint(mrb, c, x, y) <= 0) return mrb_true_value();
-  return mrb_false_value();
-}
-
-static mrb_value
-cmp_between(mrb_state *mrb, mrb_value x)
-{
-  mrb_value min, max;
-
-  mrb_get_args(mrb, "oo", &min, &max);
-
-  if (mrb_test(cmp_lt(mrb, x, min))) return mrb_false_value();
-  if (mrb_test(cmp_gt(mrb, x, max))) return mrb_false_value();
-  return mrb_true_value();
-}
-
 void
 mrb_init_comparable(mrb_state *mrb)
 {
-  struct RClass *comp;
-
-  comp = mrb_define_module(mrb, "Comparable");
-  mrb_define_method(mrb, comp, "<",  cmp_lt_m, ARGS_REQ(1)); /* 15.3.3.2.1 */
-  mrb_define_method(mrb, comp, "<=", cmp_le_m, ARGS_REQ(1)); /* 15.3.3.2.2 */
-  mrb_define_method(mrb, comp, "==", cmp_equal, ARGS_REQ(1)); /* 15.3.3.2.3 */
-  mrb_define_method(mrb, comp, ">",  cmp_gt_m, ARGS_REQ(1)); /* 15.3.3.2.4 */
-  mrb_define_method(mrb, comp, ">=", cmp_ge_m, ARGS_REQ(1)); /* 15.3.3.2.5 */
-  mrb_define_method(mrb, comp, "between?",  cmp_between, ARGS_REQ(2)); /* 15.3.3.2.6 */
+  mrb_define_module(mrb, "Comparable");
 }