diff --git a/pgxn/neon/walproposer_pg.c b/pgxn/neon/walproposer_pg.c
index 7e0175b5b2..b407d4f84b 100644
--- a/pgxn/neon/walproposer_pg.c
+++ b/pgxn/neon/walproposer_pg.c
@@ -1294,9 +1294,7 @@ StartProposerReplication(WalProposer *wp, StartReplicationCmd *cmd)
 
 #if PG_VERSION_NUM < 150000
 	if (ThisTimeLineID == 0)
-		ereport(ERROR,
-				(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-				 errmsg("IDENTIFY_SYSTEM has not been run before START_REPLICATION")));
+		ThisTimeLineID = 1;
 #endif
 
 	/*