diff --git a/src/rpcblockchain.cpp b/src/rpcblockchain.cpp
index a4b08f7e2..0145bb9ea 100644
--- a/src/rpcblockchain.cpp
+++ b/src/rpcblockchain.cpp
@@ -31,6 +31,7 @@ using namespace std;
 
 extern void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry);
 void ScriptPubKeyToJSON(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex);
+int32_t komodo_longestchain();
 
 double GetDifficultyINTERNAL(const CBlockIndex* blockindex, bool networkDifficulty)
 {
@@ -1299,7 +1300,7 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
     LOCK(cs_main);
     double progress;
     if ( ASSETCHAINS_SYMBOL[0] == 0 ) {
-        progress = Checkpoints::GuessVerificationProgress(chainParams.Checkpoints(), chainActive.LastTip());
+        progress = Checkpoints::GuessVerificationProgress(Params.Checkpoints(), chainActive.LastTip());
     } else {
 	    int32_t longestchain = komodo_longestchain();
 	    progress = (longestchain > 0 ) ? (double) chainActive.Height() / longestchain : 1.0;