diff --git a/src/objects/js-objects.cc b/src/objects/js-objects.cc
index 12b4a22651..b9942db50d 100644
--- a/src/objects/js-objects.cc
+++ b/src/objects/js-objects.cc
@@ -2795,6 +2795,7 @@ void MigrateFastToFast(Isolate* isolate, Handle<JSObject> object,
           index, HeapNumber::cast(value).value_as_bits());
       if (i < old_number_of_fields && !old_map->IsUnboxedDoubleField(index)) {
         // Transition from tagged to untagged slot.
+        heap->ClearRecordedSlot(*object, object->RawField(index.offset()));
         MemoryChunk* chunk = MemoryChunk::FromHeapObject(*object);
         chunk->InvalidateRecordedSlots(*object);
       } else {