diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index c601c066c..4cfa52441 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -78,6 +78,7 @@ namespace cryptonote
               m_last_json_checkpoints_update(0),
               m_update_download(0)
   {
+    m_checkpoints_updating.clear();
     set_cryptonote_protocol(pprotocol);
   }
   void core::set_cryptonote_protocol(i_cryptonote_protocol* pprotocol)