diff --git a/src/bin/pg_upgrade/pg_upgrade.c b/src/bin/pg_upgrade/pg_upgrade.c
index 48a54170a7..77beb11639 100644
--- a/src/bin/pg_upgrade/pg_upgrade.c
+++ b/src/bin/pg_upgrade/pg_upgrade.c
@@ -754,5 +754,5 @@ cleanup(void)
 
 	/* Remove dump and log files? */
 	if (!log_opts.retain)
-		rmtree(log_opts.basedir, true);
+		(void) rmtree(log_opts.basedir, true);
 }