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-rw-r--r--src/cryptonote_core/blockchain.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 8ec624254..d160cc66f 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -973,7 +973,7 @@ start:
std::pair<bool, uint64_t> Blockchain::check_difficulty_checkpoints() const
{
uint64_t res = 0;
- for (const std::pair<uint64_t, difficulty_type>& i : m_checkpoints.get_difficulty_points())
+ for (const std::pair<const uint64_t, difficulty_type>& i : m_checkpoints.get_difficulty_points())
{
if (i.first >= m_db->height())
break;