diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index a257dd8d21e..c7595d59bb2 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -684,6 +684,9 @@ vacuum(List *relations, const VacuumParams *params, BufferAccessStrategy bstrate
 		VacuumCostActive = false;
 		VacuumFailsafeActive = false;
 		VacuumCostBalance = 0;
+		VacuumCostBalanceLocal = 0;
+		VacuumSharedCostBalance = NULL;
+		VacuumActiveNWorkers = NULL;
 	}
 	PG_END_TRY();