diff --git a/ChangeLog b/ChangeLog
index 223714e1f5..c08ee6d598 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Sep  3 17:50:09 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c (rb_raw_obj_info): should support IMEMO/iseq.
+
 Thu Sep  3 10:07:49 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_eval.c (raise_method_missing): refine error messages when a
diff --git a/gc.c b/gc.c
index 525c83a229..0a3fe7efd5 100644
--- a/gc.c
+++ b/gc.c
@@ -8976,6 +8976,7 @@ rb_raw_obj_info(char *buff, const int buff_size, VALUE obj)
 	      IMEMO_NAME(ifunc);
 	      IMEMO_NAME(memo);
 	      IMEMO_NAME(ment);
+	      IMEMO_NAME(iseq);
 	    default: rb_bug("unknown IMEMO");
 #undef IMEMO_NAME
 	  }