diff --git a/src/net.cpp b/src/net.cpp
index b7243dce20..ea8a2a0a4a 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -600,7 +600,10 @@ void CNode::copyStats(CNodeStats &stats)
     stats.nodeid = this->GetId();
     X(nServices);
     X(addr);
-    X(fRelayTxes);
+    {
+        LOCK(cs_filter);
+        X(fRelayTxes);
+    }
     X(nLastSend);
     X(nLastRecv);
     X(nTimeConnected);