diff --git a/blocks/html/lang/en/block_html.php b/blocks/html/lang/en/block_html.php
index cdf9bb11b7f..c51692a42fe 100644
--- a/blocks/html/lang/en/block_html.php
+++ b/blocks/html/lang/en/block_html.php
@@ -30,7 +30,6 @@ $string['configcontent'] = 'Content';
 $string['configtitle'] = 'HTML block title';
 $string['html:addinstance'] = 'Add a new HTML block';
 $string['html:myaddinstance'] = 'Add a new HTML block to Dashboard';
-$string['leaveblanktohide'] = 'leave blank to hide the title';
 $string['newhtmlblock'] = '(new HTML block)';
 $string['pluginname'] = 'HTML';
 $string['search:content'] = 'HTML block content';
diff --git a/blocks/mentees/lang/en/block_mentees.php b/blocks/mentees/lang/en/block_mentees.php
index 634f1e35aba..d4af85fbde5 100644
--- a/blocks/mentees/lang/en/block_mentees.php
+++ b/blocks/mentees/lang/en/block_mentees.php
@@ -25,7 +25,6 @@
 
 $string['configtitle'] = 'Mentees block title';
 $string['configtitleblankhides'] = 'Mentees block title (no title if blank)';
-$string['leaveblanktohide'] = 'leave blank to hide the title';
 $string['mentees:addinstance'] = 'Add a new mentees block';
 $string['mentees:myaddinstance'] = 'Add a new mentees block to Dashboard';
 $string['newmenteesblock'] = '(new Mentees block)';