diff --git a/lib/bennu/iCalendar_components.php b/lib/bennu/iCalendar_components.php
index 9b9e313572c..83a1e5f573f 100644
--- a/lib/bennu/iCalendar_components.php
+++ b/lib/bennu/iCalendar_components.php
@@ -411,7 +411,7 @@ class iCalendar_event extends iCalendar_component {
             // DTEND must be later than DTSTART
             // The standard is not clear on how to hande different value types though
             // TODO: handle this correctly even if the value types are different
-            if($this->properties['DTEND'][0]->value <= $this->properties['DTSTART'][0]->value) {
+            if($this->properties['DTEND'][0]->value < $this->properties['DTSTART'][0]->value) {
                 return false;
             }
 
diff --git a/lib/bennu/readme_moodle.txt b/lib/bennu/readme_moodle.txt
index e33a956898a..845664cf3c1 100644
--- a/lib/bennu/readme_moodle.txt
+++ b/lib/bennu/readme_moodle.txt
@@ -8,3 +8,4 @@ modifications:
 5/ updated DTEND;TZID and DTSTAR;TZID values to support quotations (7 Nov 2014)
 6/ MDL-49032: fixed rfc2445_fold() to fix incorrect RFC2445_WSP definition (16 Sep 2015)
 7/ added timestamp_to_date function to support zero duration events (16 Sept 2015)
+8/ Updated \iCalendar_event::invariant_holds() to allow for same dtstart and dtend timestamps (13 July 2017)