diff --git a/ChangeLog b/ChangeLog
index 41422225a8..af61e78bf5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Mar 18 02:17:00 2016  Kenta Murata  <mrkn@mrkn.jp>
+
+	* numeric.c (fix_zero_p, fix_even_p, fix_odd_p): remove needless
+	  functions.
+
 Fri Mar 18 02:15:00 2016  Kenta Murata  <mrkn@mrkn.jp>
 
 	* numeric.c (int_even_p): treat Fixnum and Bignum values directly.
diff --git a/numeric.c b/numeric.c
index 59f27a575e..32e921a447 100644
--- a/numeric.c
+++ b/numeric.c
@@ -4031,55 +4031,6 @@ int_round(int argc, VALUE* argv, VALUE num)
     return int_round_0(num, ndigits);
 }
 
-/*
- *  call-seq:
- *     fix.zero?  ->  true or false
- *
- *  Returns +true+ if +fix+ is zero.
- *
- */
-
-static VALUE
-fix_zero_p(VALUE num)
-{
-    if (FIX2LONG(num) == 0) {
-	return Qtrue;
-    }
-    return Qfalse;
-}
-
-/*
- *  call-seq:
- *     fix.odd?  ->  true or false
- *
- *  Returns +true+ if +fix+ is an odd number.
- */
-
-static VALUE
-fix_odd_p(VALUE num)
-{
-    if (num & 2) {
-	return Qtrue;
-    }
-    return Qfalse;
-}
-
-/*
- *  call-seq:
- *     fix.even?  ->  true or false
- *
- *  Returns +true+ if +fix+ is an even number.
- */
-
-static VALUE
-fix_even_p(VALUE num)
-{
-    if (num & 2) {
-	return Qfalse;
-    }
-    return Qtrue;
-}
-
 /*
  *  Document-class: ZeroDivisionError
  *