diff --git a/ChangeLog b/ChangeLog
index 4df92b1daa..7996912c7f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Jun 19 20:51:21 2013  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
+
+	* gc.c (gc_stress_get): GC.stress can be Fixnum.
+
 Wed Jun 19 19:31:30 2013  Tanaka Akira  <akr@fsij.org>
 
 	* bignum.c (DIGSPERLONG): Don't define if BDIGIT is bigger than long.
diff --git a/gc.c b/gc.c
index a49da3219b..f296c1fc4c 100644
--- a/gc.c
+++ b/gc.c
@@ -4192,7 +4192,7 @@ gc_stat(int argc, VALUE *argv, VALUE self)
 
 /*
  *  call-seq:
- *    GC.stress	    -> true or false
+ *    GC.stress	    -> fixnum, true or false
  *
  *  Returns current status of GC stress mode.
  */
@@ -4201,7 +4201,7 @@ static VALUE
 gc_stress_get(VALUE self)
 {
     rb_objspace_t *objspace = &rb_objspace;
-    return ruby_gc_stress ? Qtrue : Qfalse;
+    return ruby_gc_stress;
 }
 
 /*