diff --git a/tools/letter.pl b/tools/letter.pl
index 35c89974cd..9f8ac95429 100755
--- a/tools/letter.pl
+++ b/tools/letter.pl
@@ -259,7 +259,6 @@ sub add_validate {
     my @content       = $input->multi_param('content');
     for my $mtt ( @mtt ) {
         my $is_html = $input->param("is_html_$mtt");
-        my $is_tt = $input->param("is_tt_$mtt") ? 1 : 0;
         my $title   = shift @title;
         my $content = shift @content;
         my $letter = C4::Letters::getletter( $oldmodule, $code, $branchcode, $mtt);