diff --git a/locallib.php b/locallib.php
index 97e0f1b..e9bf1d4 100644
--- a/locallib.php
+++ b/locallib.php
@@ -1158,8 +1158,8 @@ function certificate_draw_frame_letter($pdf, $certificate) {
  * @param int $w the width
  * @param int $h the height
  */
-function certificate_print_image($pdf, $certificate, $type, $x, $y, $w, $h) {
-    global $CFG;
+function certificate_print_image($pdf, $certificate, $type, $x, $y, $w, $h, $cert_date = null) {
+    global $CFG, $DB;
 
     switch($type) {
         case CERT_IMAGE_BORDER :
@@ -1172,10 +1172,25 @@ function certificate_print_image($pdf, $certificate, $type, $x, $y, $w, $h) {
             $path = "$CFG->dirroot/mod/certificate/pix/$type/$certificate->printseal";
             $uploadpath = "$CFG->dataroot/mod/certificate/pix/$type/$certificate->printseal";
             break;
+
         case CERT_IMAGE_SIGNATURE :
             $attr = 'printsignature';
-            $path = "$CFG->dirroot/mod/certificate/pix/$type/$certificate->printsignature";
-            $uploadpath = "$CFG->dataroot/mod/certificate/pix/$type/$certificate->printsignature";
+            
+            if($certificate->printsignature == 'automatica.jpeg' && ($cert_date != null)) {
+                $record = $DB->get_record_sql(
+                    'SELECT nome_arquivo ' .
+                    'FROM {ilb_assinaturas} ' .
+                    'WHERE ? BETWEEN dat_ini_validade AND coalesce(dat_fim_validade, extract(epoch from current_timestamp))',
+                    [$cert_date]
+                );
+                
+                $arq_assinatura = $record->nome_arquivo;
+            }else {
+                $arq_assinatura = $certificate->printsignature;
+            }
+            $path = "$CFG->dirroot/mod/certificate/pix/$type/$arq_assinatura";
+            $uploadpath = "$CFG->dataroot/mod/certificate/pix/$type/$arq_assinatura";
+
             break;
         case CERT_IMAGE_WATERMARK :
             $attr = 'printwmark';
diff --git a/type/ILB_Sem_tutoria_2014/certificate.php b/type/ILB_Sem_tutoria_2014/certificate.php
index 1388105..332ed45 100644
--- a/type/ILB_Sem_tutoria_2014/certificate.php
+++ b/type/ILB_Sem_tutoria_2014/certificate.php
@@ -38,10 +38,11 @@ require_once("$CFG->dirroot/enrol/locallib.php");
 $cc = new completion_completion(array('userid'=>$USER->id, 'course'=>$course->id));
 
 $enrol_manager = new course_enrolment_manager($PAGE, $course);
-$user_enrol = end($enrol_manager->get_user_enrolments($USER->id));
+$user_enrol = $enrol_manager->get_user_enrolments($USER->id);
 
 $start_date = $user_enrol->timestart;
 $end_date   = $cc->timecompleted;
+$cert_date = $end_date;
 
 $fmt = '%d/%m/%Y'; // Default format
 if ($certificate->datefmt == 1) {
@@ -143,7 +144,7 @@ $pdf->SetAlpha(0.2);
 certificate_print_image($pdf, $certificate, CERT_IMAGE_WATERMARK, $wmarkx, $wmarky, $wmarkw, $wmarkh);
 $pdf->SetAlpha(1);
 certificate_print_image($pdf, $certificate, CERT_IMAGE_SEAL, $sealx, $sealy, '', '');
-certificate_print_image($pdf, $certificate, CERT_IMAGE_SIGNATURE, $sigx, $sigy, '', '');
+certificate_print_image($pdf, $certificate, CERT_IMAGE_SIGNATURE, $sigx, $sigy, '', '', $cert_date);
 
 // Add text
 $pdf->SetTextColor(0, 0, 0);