diff --git a/src/checkpoints.h b/src/checkpoints.h
index 49aaa66d5..215e65c3a 100644
--- a/src/checkpoints.h
+++ b/src/checkpoints.h
@@ -31,10 +31,10 @@ struct CCheckpointData {
 
     
 //! Return conservative estimate of total number of blocks, 0 if unknown
-int GetTotalBlocksEstimate(const CCheckpointData& data);
+    int GetTotalBlocksEstimate(const CChainParams::CCheckpointData& data);
 
 //! Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
-CBlockIndex* GetLastCheckpoint(const CCheckpointData& data);
+    CBlockIndex* GetLastCheckpoint(const CChainParams::CCheckpointData& data);
 
 double GuessVerificationProgress(const CCheckpointData& data, CBlockIndex* pindex, bool fSigchecks = true);