diff --git a/lectures/lecture3/Makefile b/lectures/lecture3/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..14373ab2559c1c0d641c31989b9edaaf6b5b4869
--- /dev/null
+++ b/lectures/lecture3/Makefile
@@ -0,0 +1,3 @@
+DOCUMENTS= lecturenotes
+
+include ../../Makerules