diff --git a/ChangeLog b/ChangeLog
index 4678b61a24..f2b89c44ca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Wed Sep 10 02:51:38 2014  Koichi Sasada  <ko1@atdot.net>
+
+	* iseq.c (rb_iseq_clone): Should not insert write barrier from
+	  non-RVALUE data (to non-RVALUE data, of course).
+
+	  Ruby 2.1 also has a same problem.
+
 Wed Sep 10 02:33:08 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* parse.y (setup_fake_str): fake strings should not set class by
diff --git a/iseq.c b/iseq.c
index 32d9967964..700a161f6b 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1943,7 +1943,7 @@ rb_iseq_clone(VALUE iseqval, VALUE newcbase)
 	if (iseq0->cref_stack->nd_next) {
 	    RB_OBJ_WRITE(iseq1->cref_stack, &iseq1->cref_stack->nd_next, iseq0->cref_stack->nd_next);
 	}
-	RB_OBJ_WRITE(iseq1, &iseq1->klass, newcbase);
+	RB_OBJ_WRITE(iseq1->self, &iseq1->klass, newcbase);
     }
 
     return newiseq;
diff --git a/version.h b/version.h
index 341b57cdbc..4275f66862 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.2"
 #define RUBY_RELEASE_DATE "2014-09-10"
-#define RUBY_PATCHLEVEL 228
+#define RUBY_PATCHLEVEL 229
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 9