diff --git a/error.c b/error.c
index be53e8d55244285a6b2d71985f61d37945a9959e..6a9aa2f2c368ddf6ec0c24af0f95ed7c078251bf 100644
--- a/error.c
+++ b/error.c
@@ -2636,7 +2636,7 @@ exception_loader(VALUE exc, VALUE obj)
 
     rb_ivar_foreach(obj, ivar_copy_i, exc);
 
-    if (rb_ivar_get(exc, id_bt) == rb_ivar_get(exc, id_bt_locations)) {
+    if (rb_attr_get(exc, id_bt) == rb_attr_get(exc, id_bt_locations)) {
         rb_ivar_set(exc, id_bt_locations, Qnil);
     }