--- maxima-5.9.1/src/server.lisp.orig	2006-04-06 22:28:19.000000000 -0700
+++ maxima-5.9.1/src/server.lisp	2006-04-06 22:37:00.000000000 -0700
@@ -70,7 +70,8 @@
 (deff getpid (symbol-function
 	      ;; Decide at load time which function to use.
 	      (or (and (memq :unix *features*)
-		       (find-symbol "PROGRAM-ID" "SYS"))
+           (or (find-symbol "PROCESS-ID" "SYS")
+               (find-symbol "PROGRAM-ID" "SYS")))
 		  'getpid-from-environment)))
 
 #+cmu