1 files changed, 4 insertions, 2 deletions
diff --git a/src/index/base.h b/src/index/base.h
index 59eefab29e..df4bdff1ea 100644
--- a/src/index/base.h
+++ b/src/index/base.h
@@ -12,6 +12,7 @@
 #include <validationinterface.h>
 
 class CBlockIndex;
+class CChainState;
 
 struct IndexSummary {
     std::string name;
@@ -75,8 +76,9 @@ private:
     /// to a chain reorganization), the index must halt until Commit succeeds or else it could end up
     /// getting corrupted.
     bool Commit();
-
 protected:
+    CChainState* m_chainstate{nullptr};
+
     void BlockConnected(const std::shared_ptr<const CBlock>& block, const CBlockIndex* pindex) override;
 
     void ChainStateFlushed(const CBlockLocator& locator) override;
@@ -117,7 +119,7 @@ public:
 
     /// Start initializes the sync state and registers the instance as a
     /// ValidationInterface so that it stays in sync with blockchain updates.
-    [[nodiscard]] bool Start();
+    [[nodiscard]] bool Start(CChainState& active_chainstate);
 
     /// Stops the instance from staying in sync with blockchain updates.
     void Stop();