1 files changed, 3 insertions, 3 deletions
diff --git a/src/zmq/zmqpublishnotifier.h b/src/zmq/zmqpublishnotifier.h
index a5cd433761..cc941a899c 100644
--- a/src/zmq/zmqpublishnotifier.h
+++ b/src/zmq/zmqpublishnotifier.h
@@ -10,8 +10,8 @@
 #include <cstddef>
 #include <cstdint>
 #include <functional>
+#include <vector>
 
-class CBlock;
 class CBlockIndex;
 class CTransaction;
 
@@ -49,10 +49,10 @@ public:
 class CZMQPublishRawBlockNotifier : public CZMQAbstractPublishNotifier
 {
 private:
-    const std::function<bool(CBlock&, const CBlockIndex&)> m_get_block_by_index;
+    const std::function<bool(std::vector<uint8_t>&, const CBlockIndex&)> m_get_block_by_index;
 
 public:
-    CZMQPublishRawBlockNotifier(std::function<bool(CBlock&, const CBlockIndex&)> get_block_by_index)
+    CZMQPublishRawBlockNotifier(std::function<bool(std::vector<uint8_t>&, const CBlockIndex&)> get_block_by_index)
         : m_get_block_by_index{std::move(get_block_by_index)} {}
     bool NotifyBlock(const CBlockIndex *pindex) override;
 };