diff --git a/lang/en/customcert.php b/lang/en/customcert.php
index 12af5d8..8e2fc43 100644
--- a/lang/en/customcert.php
+++ b/lang/en/customcert.php
@@ -86,9 +86,9 @@ $string['emailstudentsubject'] = '{$a->coursefullname}: {$a->certificatename}';
 $string['emailstudents'] = 'Email students';
 $string['emailstudents_help'] = 'If set this will email the students a copy of the certificate when it becomes available. <strong>Warning:</strong> Setting this to \'Yes\' before you have finished creating the certificate will email the student an incomplete certificate.';
 $string['emailteachers'] = 'Email teachers';
-$string['emailteachers_help'] = 'If set this will email the teachers a copy of the certificate when it becomes available.';
+$string['emailteachers_help'] = 'If set this will email the teachers a copy of the certificate when it becomes available. <strong>Warning:</strong> Setting this to \'Yes\' before you have finished creating the certificate will email the teacher an incomplete certificate.';
 $string['emailothers'] = 'Email others';
-$string['emailothers_help'] = 'If set this will email the email addresses listed here (separated by a comma) with a copy of the certificate when it becomes available.';
+$string['emailothers_help'] = 'If set this will email the email addresses listed here (separated by a comma) with a copy of the certificate when it becomes available. <strong>Warning:</strong> Setting this field before you have finished creating the certificate will email the addresses an incomplete certificate.';
 $string['exampledatawarning'] = 'Some of these values may just be an example to ensure positioning of the elements is possible.';
 $string['font'] = 'Font';
 $string['font_help'] = 'The font used when generating this element.';