diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 1d6711c870..eb500f9b38 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -1365,7 +1365,7 @@ void PeerLogicValidation::BlockConnected(const std::shared_ptr<const CBlock>& pb
     }
     {
         LOCK(g_cs_recent_confirmed_transactions);
-        for (const auto ptx : pblock->vtx) {
+        for (const auto& ptx : pblock->vtx) {
             g_recent_confirmed_transactions->insert(ptx->GetHash());
         }
     }