diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c
index 5415604993..192ee065d5 100644
--- a/src/backend/access/transam/twophase.c
+++ b/src/backend/access/transam/twophase.c
@@ -1651,6 +1651,16 @@ CheckPointTwoPhase(XLogRecPtr redo_horizon)
 							   "for long-running prepared transactions",
 							   serialized_xacts,
 							   serialized_xacts)));
+
+	/*
+	 * Make sure that the content created is persistent on disk to prevent
+	 * data loss in case of an OS crash or a power failure. Each 2PC file
+	 * has been already created and flushed to disk individually by
+	 * RecreateTwoPhaseFile() using the list of GXACTs available for
+	 * normal processing as well as at recovery when replaying individually
+	 * each XLOG_XACT_PREPARE record.
+	 */
+	fsync_fname(TWOPHASE_DIR, true);
 }
 
 /*