diff --git a/htdocs/ticketsup/class/ticketsup.class.php b/htdocs/ticketsup/class/ticketsup.class.php
index e201f1ab5bd..76902714a9e 100644
--- a/htdocs/ticketsup/class/ticketsup.class.php
+++ b/htdocs/ticketsup/class/ticketsup.class.php
@@ -1038,7 +1038,7 @@ class Ticketsup extends CommonObject
     {
         global $langs;
 
-        if (count($this->cache_types_tickets)) {
+        if (! empty($this->cache_types_tickets) && count($this->cache_types_tickets)) {
             return 0;
         }
         // Cache deja charge
@@ -1078,7 +1078,7 @@ class Ticketsup extends CommonObject
     {
         global $langs;
 
-        if (count($this->cache_category_tickets)) {
+        if (! empty($this->cache_category_ticket) && count($this->cache_category_tickets)) {
             return 0;
         }
         // Cache deja charge
@@ -1118,7 +1118,7 @@ class Ticketsup extends CommonObject
     {
         global $langs;
 
-        if (count($this->cache_severity_tickets)) {
+        if (! empty($this->cache_severity_tickets) && count($this->cache_severity_tickets)) {
             return 0;
         }
         // Cache deja charge
diff --git a/htdocs/ticketsup/index.php b/htdocs/ticketsup/index.php
index 8881b8c3ad2..b98a81f204e 100644
--- a/htdocs/ticketsup/index.php
+++ b/htdocs/ticketsup/index.php
@@ -215,7 +215,7 @@ print '<tr class="liste_titre"><th >' . $langs->trans("Statistics") . ' ' . img_
 print '<tr><td>';
 
 // don't display graph if no series
-if (count($dataseries) >1) {
+if (! empty($dataseries) && count($dataseries) > 1) {
     $data = array();
     foreach ($dataseries as $key => $value) {
         $data[] = array($value['label'], $value['data']);