--- a/doc/tutorial-pt-br/Makefile	Mon Feb 18 20:22:50 2013 -0800
+++ b/doc/tutorial-pt-br/Makefile	Mon Feb 18 21:01:50 2013 -0800
@@ -25,6 +25,8 @@
 
 .PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest
 
+.NOTPARALLEL:
+
 %.eps : %.dia; $(DIA) -t eps $< -e $@
 %.png : %.dia; $(DIA) -t png $< -e $@
 %.pdf : %.eps; $(EPSTOPDF) $< -o=$@