diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index c6a3c6180..0a9470fb6 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -918,8 +918,10 @@ difficulty_type Blockchain::get_difficulty_for_next_block()
 //------------------------------------------------------------------
 std::vector<time_t> Blockchain::get_last_block_timestamps(unsigned int blocks) const
 {
-  std::vector<time_t> timestamps(blocks);
   uint64_t height = m_db->height();
+  if (blocks > height)
+    blocks = height;
+  std::vector<time_t> timestamps(blocks);
   while (blocks--)
     timestamps[blocks] = m_db->get_block_timestamp(height - blocks - 1);
   return timestamps;