diff --git a/calendar/event.php b/calendar/event.php
index 29b7324b5bd..733fcc2484d 100644
--- a/calendar/event.php
+++ b/calendar/event.php
@@ -125,6 +125,10 @@
 
                 $form->name = clean_param(strip_tags($form->name,'<lang><span>'), PARAM_CLEAN);
 
+                // To avoid double slashes
+                $form->name = stripslashes($form->name);
+                $form->description = stripslashes($form->description);
+
                 $form->timestart = make_timestamp($form->startyr, $form->startmon, $form->startday, $form->starthr, $form->startmin);
                 if($form->duration == 1) {
                     $form->timeduration = make_timestamp($form->endyr, $form->endmon, $form->endday, $form->endhr, $form->endmin) - $form->timestart;
@@ -158,7 +162,7 @@
                             'timestart = '.$timestartoffset.','.
                             'timeduration = '.$form->timeduration.','.
                             'timemodified = '.time().' WHERE repeatid = '.$event->repeatid);
-                            
+
                         /// Log the event update.
                         $form->name = stripslashes($form->name);  //To avoid double-slashes
                         add_to_log($form->courseid, 'calendar', 'edit all', 'event.php?action=edit&amp;id='.$form->id, $form->name);