diff --git a/CHANGELOG.md b/CHANGELOG.md
index 781eca2..b0ba323 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ All notable changes to this project will be documented in this file.
 - New {ifnotgrouping groupingid}...{/ifnotgrouping} tag.
 - New {mygroupings} tag.
 ### Updated
+- Link to External LTI now only available in Moodle 4.3+.
 - Refactoring in preparations for Moodle 4.5.
 - Added more documentation to README.md.
 - Fixed links and updated table of contents in README.md.
diff --git a/classes/text_filter.php b/classes/text_filter.php
index f6ed585..90ccf2b 100644
--- a/classes/text_filter.php
+++ b/classes/text_filter.php
@@ -942,7 +942,10 @@ private function generatortags(&$text) {
                     $menu .= '-{getstring:filter_filtercodes}unenrolme{/getstring}|{courseunenrolurl}' . PHP_EOL;
                 }
                 if ($this->hasminarchetype('editingteacher')) {
-                    $menu .= '-{getstring:mod_lti}courseexternaltools{/getstring}|/mod/lti/coursetools.php?id={courseid}' . PHP_EOL;
+                    if ($CFG->branch >= 403) {
+                        $menu .= '-{getstring:mod_lti}courseexternaltools{/getstring}|/mod/lti/coursetools.php?id={courseid}'
+                            . PHP_EOL;
+                    }
                     if ($CFG->branch >= 311) {
                         $pluginame = '{getstring:tool_brickfield}pluginname{/getstring}';
                         $menu .= '-' . $pluginame . '|/admin/tool/brickfield/index.php?courseid={courseid}' . PHP_EOL;