1 files changed, 1 insertions, 1 deletions
diff --git a/range.c b/range.c
index d3ead78d94..df4ad474cc 100644
--- a/range.c
+++ b/range.c
@@ -1211,7 +1211,7 @@ static VALUE
 range_dumper(VALUE range)
 {
     VALUE v;
-    NEWOBJ_OF(m, struct RObject, rb_cObject, T_OBJECT);
+    NEWOBJ_OF(m, struct RObject, rb_cObject, T_OBJECT | (RGENGC_WB_PROTECTED_OBJECT ? FL_WB_PROTECTED : 1));
 
     v = (VALUE)m;