diff --git a/lib/editor/tinymce/lang/en/editor_tinymce.php b/lib/editor/tinymce/lang/en/editor_tinymce.php
index 87bc00aa039..602be9c84eb 100644
--- a/lib/editor/tinymce/lang/en/editor_tinymce.php
+++ b/lib/editor/tinymce/lang/en/editor_tinymce.php
@@ -34,6 +34,7 @@ $string['customtoolbar_desc'] = 'Each line contains a list of comma separated bu
 $string['fontselectlist'] = 'Available fonts list';
 $string['pluginname'] = 'TinyMCE HTML editor';
 $string['settings'] = 'General settings';
+$string['subplugintype_tinymce'] = 'Plugin';
 $string['subplugintype_tinymce_plural'] = 'Plugins';
 
 
diff --git a/mod/assign/lang/en/assign.php b/mod/assign/lang/en/assign.php
index aaf3315a873..da515c0df4c 100644
--- a/mod/assign/lang/en/assign.php
+++ b/mod/assign/lang/en/assign.php
@@ -384,6 +384,10 @@ $string['submittedearly'] = 'Assignment was submitted {$a} early';
 $string['submittedlate'] = 'Assignment was submitted {$a} late';
 $string['submittedlateshort'] = '{$a} late';
 $string['submitted'] = 'Submitted';
+$string['subplugintype_assignsubmission'] = 'Submission plugin';
+$string['subplugintype_assignsubmission_plural'] = 'Submission plugins';
+$string['subplugintype_assignfeedback'] = 'Feedback plugin';
+$string['subplugintype_assignfeedback_plural'] = 'Feedback plugins';
 $string['teamsubmission'] = 'Students submit in groups';
 $string['teamsubmission_help'] = 'If enabled students will be divided into groups based on the default set of groups or a custom grouping. A group submission will be shared among group members and all members of the group will see each others changes to the submission.';
 $string['teamsubmissiongroupingid'] = 'Grouping for student groups';
diff --git a/mod/lti/lang/en/lti.php b/mod/lti/lang/en/lti.php
index af2b9695da4..5e0a7ed5f4e 100644
--- a/mod/lti/lang/en/lti.php
+++ b/mod/lti/lang/en/lti.php
@@ -395,6 +395,8 @@ $string['size'] = 'Size parameters';
 $string['submission'] = 'Submission';
 $string['submissions'] = 'Submissions';
 $string['submissionsfor'] = 'Submissions for {$a}';
+$string['subplugintype_ltisource'] = 'LTI source';
+$string['subplugintype_ltisource_plural'] = 'LTI sources';
 $string['toggle_debug_data'] = 'Toggle Debug Data';
 $string['tool_config_not_found'] = 'Tool configuration not found for this URL.';
 $string['tool_settings'] = 'Tool Settings';