diff --git a/mod/lti/lang/en/lti.php b/mod/lti/lang/en/lti.php
index f913f1d8bc4..11391c1ce88 100644
--- a/mod/lti/lang/en/lti.php
+++ b/mod/lti/lang/en/lti.php
@@ -70,7 +70,6 @@ $string['addnewapp'] = 'Enable external application';
 $string['addserver'] = 'Add new trusted server';
 $string['addtype'] = 'Add preconfigured tool';
 $string['allow'] = 'Allow';
-$string['allowinstructorcustom'] = 'Allow teachers to add custom parameters';
 $string['allowsetting'] = 'Allow tool to store 8K of settings in Moodle';
 $string['always'] = 'Always';
 $string['automatic'] = 'Automatic, based on tool URL';
diff --git a/mod/lti/locallib.php b/mod/lti/locallib.php
index 3bf73d3be15..13ca7c5bc5f 100644
--- a/mod/lti/locallib.php
+++ b/mod/lti/locallib.php
@@ -567,11 +567,9 @@ function lti_build_custom_parameters($toolproxy, $tool, $instance, $params, $cus
     if ($customstr) {
         $custom = lti_split_custom_parameters($toolproxy, $tool, $params, $customstr, $islti2);
     }
-    if (!isset($typeconfig['allowinstructorcustom']) || $typeconfig['allowinstructorcustom'] != LTI_SETTING_NEVER) {
-        if ($instructorcustomstr) {
-            $custom = array_merge(lti_split_custom_parameters($toolproxy, $tool, $params,
-                $instructorcustomstr, $islti2), $custom);
-        }
+    if ($instructorcustomstr) {
+        $custom = array_merge(lti_split_custom_parameters($toolproxy, $tool, $params,
+            $instructorcustomstr, $islti2), $custom);
     }
     if ($islti2) {
         $custom = array_merge(lti_split_custom_parameters($toolproxy, $tool, $params,