diff --git a/eo/tutorial/Makefile b/eo/tutorial/Makefile
index d43f7495..fcdd0e0c 100644
--- a/eo/tutorial/Makefile
+++ b/eo/tutorial/Makefile
@@ -1,4 +1,4 @@
-SUBDIRS = Lesson1 Lesson2 Lesson3 Lesson4
+SUBDIRS = Lesson1 Lesson2 Lesson3
 
 lesson1 : 
 	cd Lesson1; make
@@ -9,9 +9,6 @@ lesson2 :
 lesson3 : 
 	cd Lesson3; make
 
-lesson4 : 
-	cd Lesson4; make
-
 all:
 	for i in $(SUBDIRS); do pushd $$i && $(MAKE); popd; done