diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index ce7da4fe7..527f0f6d2 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -201,7 +201,7 @@ public:
 };
 static CMainParams mainParams;
 
-void CChainParams::SetCheckpointData(Checkpoints::CCheckpointData checkpointData)
+void CChainParams::SetCheckpointData(CChainParams::CCheckpointData checkpointData)
 {
     CChainParams::checkpointData = checkpointData;
 }