diff --git a/src/init.cpp b/src/init.cpp
index a78224d5d7..c42c206a51 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -27,6 +27,7 @@
 #include "policy/policy.h"
 #include "rpc/server.h"
 #include "rpc/register.h"
+#include "rpc/blockchain.h"
 #include "script/standard.h"
 #include "script/sigcache.h"
 #include "scheduler.h"
diff --git a/src/rpc/blockchain.h b/src/rpc/blockchain.h
index 69cba8f019..8821f297f6 100644
--- a/src/rpc/blockchain.h
+++ b/src/rpc/blockchain.h
@@ -16,5 +16,8 @@ class CBlockIndex;
  */
 double GetDifficulty(const CBlockIndex* blockindex = nullptr);
 
+/** Callback for when block tip changed. */
+void RPCNotifyBlockChange(bool ibd, const CBlockIndex *);
+
 #endif
 
diff --git a/src/rpc/server.h b/src/rpc/server.h
index c3692d91b7..34a9d3c24c 100644
--- a/src/rpc/server.h
+++ b/src/rpc/server.h
@@ -198,7 +198,6 @@ bool StartRPC();
 void InterruptRPC();
 void StopRPC();
 std::string JSONRPCExecBatch(const UniValue& vReq);
-void RPCNotifyBlockChange(bool ibd, const CBlockIndex *);
 
 // Retrieves any serialization flags requested in command line argument
 int RPCSerializationFlags();