diff --git a/gc.c b/gc.c
index 0d2a9a4daa..2863240aa6 100644
--- a/gc.c
+++ b/gc.c
@@ -2392,7 +2392,7 @@ gc_continue(rb_objspace_t *objspace, rb_size_pool_t *size_pool, rb_heap_t *heap)
     gc_enter(objspace, gc_enter_event_continue, &lock_lev);
 
     /* Continue marking if in incremental marking. */
-    if (heap->free_pages == NULL && is_incremental_marking(objspace)) {
+    if (is_incremental_marking(objspace)) {
         if (gc_marks_continue(objspace, size_pool, heap)) {
             gc_sweep(objspace);
         }