diff --git a/branches/paradiseo-moeo-1.0/Makefile.am b/branches/paradiseo-moeo-1.0/Makefile.am
index f82d6f279..953971025 100644
--- a/branches/paradiseo-moeo-1.0/Makefile.am
+++ b/branches/paradiseo-moeo-1.0/Makefile.am
@@ -4,7 +4,7 @@ clean_all: clean_aux clean_doc
 	-@make clean
 	-@(rm -rf aclocal.m4 autom4te.cache configure config.* CO* dep* INST* install-sh miss* mkins* Makefile Makefile.in;\
 	cd docs; rm -rf Makefile Makefile.in *.doxytag; cd ../src ; rm -rf Makefile Makefile.in; cd ../tutorials; rm -rf Makefile Makefile.in;\
-	cd lesson1; rm -rf .deps/ Makefile Makefile.in)
+	cd lesson1; rm -rf .deps/ Makefile Makefile.in; cd ../lesson2; rm -rf .deps/ Makefile Makefile.in)
 
 clean_aux:
 	-@find . \( -name "*~" -o -name "*.old" -o -name "#*" -o -name "*.bak" \) -print -exec rm -rf \{\} \;