diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index b5feac2d5..62397e68c 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -36,7 +36,7 @@
 # error "Bitcoin cannot be compiled without assertions."
 #endif
 
-int64_t nTimeBestReceived = 0; // Used only to inform the wallet of when we last received a block
+std::atomic<int64_t> nTimeBestReceived(0); // Used only to inform the wallet of when we last received a block
 
 struct IteratorComparator
 {