--- a/OSProcess.st	Tue Dec 27 21:00:18 2016 +0100
+++ b/OSProcess.st	Tue Dec 27 23:00:24 2016 +0100
@@ -394,7 +394,7 @@
 isAlive
     "answer true, if the process is still alive"
 
-    ^ pid notNil and:[exitStatus notNil]
+    ^ pid notNil and:[exitStatus isNil]
 !
 
 isDead