diff --git a/src/SerializedLedger.cpp b/src/SerializedLedger.cpp
index 5796952368..41c4bc7fb8 100644
--- a/src/SerializedLedger.cpp
+++ b/src/SerializedLedger.cpp
@@ -102,7 +102,7 @@ bool SerializedLedgerEntry::thread(const uint256& txID, uint32 ledgerSeq, uint25
 	if (oldPrevTxID == txID)
 		return false;
 	prevTxID = oldPrevTxID;
-	prevLedgerID = getIFieldU32(sfLastTxnID);
+	prevLedgerID = getIFieldU32(sfLastTxnSeq);
 	assert(prevTxID != txID);
 	setIFieldH256(sfLastTxnID, txID);
 	setIFieldU32(sfLastTxnSeq, ledgerSeq);