diff --git a/gc/default.c b/gc/default.c
index 7b7b4694e4..5717baac2b 100644
--- a/gc/default.c
+++ b/gc/default.c
@@ -626,6 +626,7 @@ typedef struct rb_objspace {
     rb_postponed_job_handle_t finalize_deferred_pjob;
 
     unsigned long live_ractor_cache_count;
+    bool multi_ractor_p;
 } rb_objspace_t;
 
 #ifndef HEAP_PAGE_ALIGN_LOG
@@ -2609,7 +2610,7 @@ newobj_alloc(rb_objspace_t *objspace, rb_ractor_newobj_cache_t *cache, size_t si
         }
     }
 
-    RUBY_ATOMIC_SIZE_ADD(size_pool->total_allocated_objects, 1);
+    size_pool->total_allocated_objects++;
 
     return obj;
 }
@@ -5397,7 +5398,8 @@ gc_verify_internal_consistency_(rb_objspace_t *objspace)
     /* check counters */
 
     if (!is_lazy_sweeping(objspace) &&
-            !finalizing) {
+            !finalizing &&
+            !objspace->multi_ractor_p) {
         if (objspace_live_slots(objspace) != data.live_object_count) {
             fprintf(stderr, "heap_pages_final_slots: %"PRIdSIZE", total_freed_objects: %"PRIdSIZE"\n",
                     heap_pages_final_slots, total_freed_objects(objspace));
@@ -6420,6 +6422,10 @@ rb_gc_impl_ractor_cache_alloc(void *objspace_ptr)
 
     objspace->live_ractor_cache_count++;
 
+    if (objspace->live_ractor_cache_count > 1) {
+        objspace->multi_ractor_p = true;
+    }
+
     return calloc1(sizeof(rb_ractor_newobj_cache_t));
 }