diff --git a/ChangeLog b/ChangeLog
index 05d26f8994..f8e877077c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Nov 19 15:31:45 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* compile.c (iseq_compile_each): T_IMEMO/iseq objects should be
+	  wrap with ISeq wrappers. [Bug #11676]
+
 Thu Nov 19 15:16:12 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
 
 	* lib/rubygems: Update to RubyGems 2.5.0+ HEAD(c6b4946).
diff --git a/compile.c b/compile.c
index 5962e8a6ae..e5ec768c94 100644
--- a/compile.c
+++ b/compile.c
@@ -5357,7 +5357,7 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 						rb_id2str(node->nd_mid),
 						ISEQ_TYPE_METHOD, line);
 
-	debugp_param("defn/iseq", (VALUE)method_iseq);
+	debugp_param("defn/iseq", rb_iseqw_new(method_iseq));
 
 	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
 	ADD_INSN1(ret, line, putobject, ID2SYM(node->nd_mid));
@@ -5375,7 +5375,7 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 						      rb_id2str(node->nd_mid),
 						      ISEQ_TYPE_METHOD, line);
 
-	debugp_param("defs/iseq", (VALUE)singleton_method);
+	debugp_param("defs/iseq", rb_iseqw_new(singleton_method));
 
 	ADD_INSN1(ret, line, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
 	COMPILE(ret, "defs: recv", node->nd_recv);