--- a/Make.proto	Mon Nov 03 19:42:31 2014 +0000
+++ b/Make.proto	Mon Nov 03 20:28:27 2014 +0000
@@ -63,7 +63,7 @@
 
 all:: preMake classLibRule postMake
 
-pre_objs::  
+pre_objs::
 
 
 mc:
@@ -71,6 +71,7 @@
 
 mcz: mc
 	$(TOP)/projects/smalltalk/smalltalk --eval "                            \
+	        Class tryLocalSourceFirst: true.				\
 		Smalltalk packagePath add:'$(TOP)/..' .                       \
 		Smalltalk loadPackage:'stx:goodies/petitparser'.              \
 		(Smalltalk at: #'stx_goodies_petitparser') exportAsMczTo: 'mc'."