diff --git a/message/index.php b/message/index.php
index 69102822674..e01a8133a94 100644
--- a/message/index.php
+++ b/message/index.php
@@ -87,6 +87,9 @@ $PAGE->set_context(get_context_instance(CONTEXT_USER, $USER->id));
 $PAGE->navigation->extend_for_user($USER);
 $PAGE->set_pagelayout('course');
 
+// Disable message notification popups while the user is viewing their messages
+$PAGE->set_popup_notification_allowed(false);
+
 $context = get_context_instance(CONTEXT_SYSTEM);
 
 $user1 = null;