diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c
index 271a3146db..88c63ba0f0 100644
--- a/src/backend/access/transam/twophase.c
+++ b/src/backend/access/transam/twophase.c
@@ -1073,6 +1073,8 @@ StartPrepare(GlobalTransaction gxact)
 	hdr.ninvalmsgs = xactGetCommittedInvalidationMessages(&invalmsgs,
 														  &hdr.initfileinval);
 	hdr.gidlen = strlen(gxact->gid) + 1;	/* Include '\0' */
+	hdr.origin_lsn = InvalidXLogRecPtr;
+	hdr.origin_timestamp = 0;
 
 	save_state_data(&hdr, sizeof(TwoPhaseFileHeader));
 	save_state_data(gxact->gid, hdr.gidlen);