1 files changed, 0 insertions, 2 deletions
diff --git a/src/txdb.h b/src/txdb.h
index 5eb5731db3..7257b0dd21 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -14,7 +14,6 @@
 #include <utility>
 #include <vector>
 
-class CBigNum;
 class CCoins;
 class uint256;
 
@@ -52,7 +51,6 @@ private:
     void operator=(const CBlockTreeDB&);
 public:
     bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
-    bool WriteBestInvalidWork(const CBigNum& bnBestInvalidWork);
     bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
     bool WriteBlockFileInfo(int nFile, const CBlockFileInfo &fileinfo);
     bool ReadLastBlockFile(int &nFile);