diff --git a/src/evo/cbtx.cpp b/src/evo/cbtx.cpp
index 3fe222859343fd..15ca097061617a 100644
--- a/src/evo/cbtx.cpp
+++ b/src/evo/cbtx.cpp
@@ -469,6 +469,11 @@ static std::optional<CCbTx> GetCoinbaseTx(const CBlockIndex* pindex)
 
 std::optional<std::pair<CBLSSignature, uint32_t>> GetNonNullCoinbaseChainlock(const CBlockIndex* pindex)
 {
+    // There's no CbTx before DIP0003 activation
+    if (DeploymentActiveAfter(pindex, Params().GetConsensus(), Consensus::DEPLOYMENT_DIP0003)) {
+        return std::nullopt;
+    }
+
     auto opt_cbtx = GetCoinbaseTx(pindex);
 
     if (!opt_cbtx.has_value()) {