--- a/ProcessorScheduler.st	Wed Aug 05 22:44:54 2015 +0100
+++ b/ProcessorScheduler.st	Sun Aug 09 07:12:41 2015 +0100
@@ -1152,7 +1152,7 @@
 
     |osProcessStatus blocking wasBlocked|
 
-    blocking := OperatingSystem blockingChildProcessWait.
+    blocking := OperatingSystem isChildProcessWaitBlocking.
 
     "/ no interrupt processing, to avoid races with monitorPid
     wasBlocked := OperatingSystem blockInterrupts.