diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 47be98e..4c52cc1 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -1511,6 +1511,8 @@ function purge_all_caches() {
     // purge all other caches: rss, simplepie, etc.
     remove_dir($CFG->cachedir.'', true);
 
+    rebuild_course_cache(0,true);
+
     // make sure cache dir is writable, throws exception if not
     make_cache_directory('');