diff -r 10147ecf9196 -r 291f5848bf55 src/Pure/System/host.scala
--- a/src/Pure/System/host.scala	Thu Mar 02 15:55:20 2023 +0100
+++ b/src/Pure/System/host.scala	Thu Mar 02 16:09:22 2023 +0100
@@ -54,7 +54,7 @@
   def process_policy_options(options: Options, numa_node: Option[Int]): Options =
     numa_node match {
       case None => options
-      case Some(n) => options.string("ML_process_policy") = process_policy(n)
+      case Some(n) => options.string("process_policy") = process_policy(n)
     }
 
   def perhaps_process_policy_options(options: Options): Options = {