diff --git a/source/runtime.c b/source/runtime.c
index afdbe636..94c146c6 100644
--- a/source/runtime.c
+++ b/source/runtime.c
@@ -1475,6 +1475,7 @@ void gc_scan_object (JSContext *ctx, void *ptr, uint8_t *from_base, uint8_t *fro
       fn->u.cell.env_record = gc_copy_value (ctx, fn->u.cell.env_record, from_base, from_end, to_base, to_free, to_end);
     } else if (fn->kind == JS_FUNC_KIND_NATIVE) {
       fn->u.cell.outer_frame = gc_copy_value (ctx, fn->u.cell.outer_frame, from_base, from_end, to_base, to_free, to_end);
+      fn->u.cell.env_record = gc_copy_value (ctx, fn->u.cell.env_record, from_base, from_end, to_base, to_free, to_end);
     }
     break;
   }