diff --git a/src/backend/replication/logical/reorderbuffer.c b/src/backend/replication/logical/reorderbuffer.c
index fa98580302a..478c3e874af 100644
--- a/src/backend/replication/logical/reorderbuffer.c
+++ b/src/backend/replication/logical/reorderbuffer.c
@@ -2009,7 +2009,7 @@ ReorderBufferSerializeTXN(ReorderBuffer *rb, ReorderBufferTXN *txn)
 		 * store in segment in which it belongs by start lsn, don't split over
 		 * multiple segments tho
 		 */
-		if (fd == -1 || XLByteInSeg(change->lsn, curOpenSegNo))
+		if (fd == -1 || !XLByteInSeg(change->lsn, curOpenSegNo))
 		{
 			XLogRecPtr	recptr;