diff --git a/ChangeLog b/ChangeLog
index 4d199242f6..ea39c31063 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jun 25 06:49:25 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c (obj_info): show more details for T_IMEMO/imemo_ment.
+
 Thu Jun 25 06:40:46 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_method.c (rb_method_definition_reset): need a WB for
diff --git a/gc.c b/gc.c
index d0def041c5..d018190de0 100644
--- a/gc.c
+++ b/gc.c
@@ -8944,7 +8944,8 @@ obj_info(VALUE obj)
 	snprintf(buff, OBJ_INFO_BUFFERS_SIZE, "%s %s", buff, imemo_name);
 	if (imemo_type(obj) == imemo_ment) {
 	    const rb_method_entry_t *me = &RANY(obj)->as.imemo.ment;
-	    snprintf(buff, OBJ_INFO_BUFFERS_SIZE, "%s (called_id: %s, type: %d)", buff, rb_id2name(me->called_id), me->def->type);
+	    snprintf(buff, OBJ_INFO_BUFFERS_SIZE, "%s (called_id: %s, type: %d, alias: %d, class: %s)", buff,
+		     rb_id2name(me->called_id), me->def->type, me->def->alias_count, obj_info(me->klass));
 	}
       }
       default: