diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index fe6bf20770..0071e8b75f 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -818,7 +818,7 @@ DEFINE_BOOL(fast_promotion_new_space, false,
 
 DEFINE_BOOL(clear_free_memory, false, "initialize free memory with 0")
 
-DEFINE_BOOL(young_generation_large_objects, false,
+DEFINE_BOOL(young_generation_large_objects, true,
             "allocates large objects by default in the young generation large "
             "object space")