diff --git a/src/net_processing.h b/src/net_processing.h
index 3e7d596a597b..cf1166167ec2 100644
--- a/src/net_processing.h
+++ b/src/net_processing.h
@@ -29,7 +29,7 @@ void RegisterNodeSignals(CNodeSignals& nodeSignals);
 /** Unregister a network node */
 void UnregisterNodeSignals(CNodeSignals& nodeSignals);
 
-class PeerLogicValidation : public CValidationInterface {
+class PeerLogicValidation final : public CValidationInterface {
 private:
     CConnman* connman;
 
diff --git a/src/validationinterface.h b/src/validationinterface.h
index f5f5df31c043..9a86bcf29eed 100644
--- a/src/validationinterface.h
+++ b/src/validationinterface.h
@@ -33,6 +33,7 @@ void UnregisterAllValidationInterfaces();
 
 class CValidationInterface {
 protected:
+    ~CValidationInterface() = default;
     virtual void AcceptedBlockHeader(const CBlockIndex *pindexNew) {}
     virtual void NotifyHeaderTip(const CBlockIndex *pindexNew, bool fInitialDownload) {}
     virtual void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) {}