diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 2cb2e74328..0ed477717a 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -10037,7 +10037,7 @@ 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);