diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index ec86617..f2cbc7a 100755
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -373,7 +373,7 @@ class CRegTestParams : public CChainParams {
         consensus.signet_challenge.clear();
         consensus.nSubsidyHalvingInterval = 150;
         consensus.BIP16Exception = uint256();
-        consensus.BIP34Height = 17; // BIP34 activated on regtest (Used in functional tests)
+        consensus.BIP34Height = 0; // BIP34 activated on regtest (Used in functional tests)
         consensus.BIP34Hash = uint256();
         consensus.BIP65Height = 0; // BIP65 activated on regtest (Used in functional tests)
         consensus.BIP66Height = 0; // BIP66 activated on regtest (Used in functional tests)