1 files changed, 2 insertions, 1 deletions
diff --git a/src/zmq/zmqnotificationinterface.h b/src/zmq/zmqnotificationinterface.h
index afc0b8d24e..8eea15c068 100644
--- a/src/zmq/zmqnotificationinterface.h
+++ b/src/zmq/zmqnotificationinterface.h
@@ -9,6 +9,7 @@
 #include <string>
 #include <map>
 
+class CBlockIndex;
 class CZMQAbstractNotifier;
 
 class CZMQNotificationInterface : public CValidationInterface
@@ -23,7 +24,7 @@ public:
 
 protected: // CValidationInterface
     void SyncTransaction(const CTransaction &tx, const CBlock *pblock);
-    void UpdatedBlockTip(const uint256 &newHashTip);
+    void UpdatedBlockTip(const CBlockIndex *pindex);
 
 private:
     CZMQNotificationInterface();