diff --git a/Doc/lectures.xml b/Doc/lectures.xml
index e8eb9f8265724d5f715ab2bbbfdc0182306e6553..b7e4d57e0313fe5789227d1d45ddc5ea56e316cc 100644
--- a/Doc/lectures.xml
+++ b/Doc/lectures.xml
@@ -12,8 +12,10 @@
     <title>Lecture notes</title>
 
     <!--ToDo:
--Moving Ex. 102 (Distinguishing leap- and non-leap years) after unit test introduction
 
+    - Moving Ex. 102 (Distinguishing leap- and non-leap years) after unit test introduction
+    - Exercise preconditions (Unit Tests)
+    - Exam winter 2020 *Range.java doc correction
 
 -->