diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index 6c73d32ad2..13fa79b06b 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -2963,7 +2963,7 @@ table_recheck_autovac(Oid relid, HTAB *table_toast_map,
 		 */
 		tab->at_dobalance =
 			!(avopts && (avopts->vacuum_cost_limit > 0 ||
-						 avopts->vacuum_cost_delay > 0));
+						 avopts->vacuum_cost_delay >= 0));
 
 		/*
 		 * When we decide to do vacuum or analyze, the existing stats cannot