diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index d53a8afd38..a1ceded9e0 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -9836,7 +9836,7 @@ KeepLogSeg(XLogRecPtr recptr, XLogSegNo *logSegNo)
 	 * max_slot_wal_keep_size.
 	 */
 	keep = XLogGetReplicationSlotMinimumLSN();
-	if (keep != InvalidXLogRecPtr)
+	if (keep != InvalidXLogRecPtr && keep < recptr)
 	{
 		XLByteToSeg(keep, segno, wal_segment_size);