diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c
index c5c194a..574ca70 100644
--- a/src/backend/commands/vacuumlazy.c
+++ b/src/backend/commands/vacuumlazy.c
@@ -1261,7 +1261,7 @@ lazy_scan_heap(Relation onerel, int options, LVRelStats *vacrelstats,
 	vacrelstats->new_rel_tuples = vac_estimate_reltuples(onerel, false,
 														 nblocks,
 												 vacrelstats->tupcount_pages,
-														 num_tuples);
+														 num_tuples - nkeep);
 
 	/*
 	 * Release any remaining pin on visibility map page.