diff --git a/lang/en/pdfannotator.php b/lang/en/pdfannotator.php
index 33de286e0aec5b4b3322e3dc6953d4ec281073e8..89dc1103cc47efdedb83ef56d89f354b41d44989 100644
--- a/lang/en/pdfannotator.php
+++ b/lang/en/pdfannotator.php
@@ -123,9 +123,6 @@ $string['error:redihideCommentsplayComment'] = 'An error occurred while re-inser
 $string['error:voteComment'] = 'An error has occured while saving the vote.';
 $string['error'] = 'Error!';
 $string['eventreport_added'] = 'A comment was reported';
-$string['feedback'] = 'Feedback';
-$string['feedbackheadline'] = 'Feedback';
-$string['feedbackwassentoff'] = 'Thank you for your feedback.';
 $string['filenotfound'] = 'File not found, sorry.';
 $string['forward'] = 'Forward';
 $string['forwardedquestionhtml'] = '{$a->sender} forwarded the following question to you: <br /> <br />
@@ -297,7 +294,6 @@ $string['pdfannotatorcolumn'] = 'Document';
 $string['pdfannotatorcontent'] = 'Files and subfolders';
 $string['pdfannotatorname'] = 'PDF Annotation Tool';
 $string['pdfButton'] = 'Document';
-$string['pleaforfeedback'] = 'The PDF Annotator is still being developed. You can help us tailor it to your needs by giving us feedback. Thank you in advance.';
 $string['pluginadministration'] = 'PDF Annotation administration';
 $string['pluginname'] = 'PDF Annotation';
 $string['point'] = 'Add a pin in the document and write a comment.';
@@ -366,7 +362,6 @@ $string['seeabove'] = '';
 $string['seenreports'] = 'read only';
 $string['send'] = 'Send';
 $string['sendAnonymous'] = 'post anonymous';
-$string['sendfeedback'] = 'Submit';
 $string['setting_alternative_name'] = 'Name';
 $string['setting_alternative_name_desc'] = 'Provide an alternative name for the PDF. If empty, the name of the pdf will be taken as representative name';
 $string['setting_alternative_name_help'] = "If the name is more than 20 characters long, the remaining characters will be replaced with '...' in the annotator's internal tab navigation.";
@@ -400,7 +395,6 @@ $string['subscribe'] = 'Subscribe to this Annotations';
 $string['subscribed'] = 'Subscribed';
 $string['subscribedanswers'] = 'to my subscribed questions';
 $string['subscribeQuestion'] = 'Subscribe';
-$string['subtitleforfeedbackform'] = 'Your message to the developers';
 $string['subtitleforreportcommentform'] = 'Your message for the course manager';
 $string['successfullyEdited'] = 'Changes saved';
 $string['successfullyHidden'] = 'Participants now see this comment as hidden.';