diff --git a/db/flush_scheduler.cc b/db/flush_scheduler.cc
index 636ff5a98..56816159e 100644
--- a/db/flush_scheduler.cc
+++ b/db/flush_scheduler.cc
@@ -28,6 +28,7 @@ ColumnFamilyData* FlushScheduler::GetNextColumnFamily() {
     if (cfd->IsDropped()) {
       if (cfd->Unref()) {
         delete cfd;
+        cfd = nullptr;
       }
     } else {
       break;