diff --git a/htdocs/core/boxes/box_graph_nb_tickets_type.php b/htdocs/core/boxes/box_graph_nb_tickets_type.php
index eea0f0ccf77..44c883e6096 100644
--- a/htdocs/core/boxes/box_graph_nb_tickets_type.php
+++ b/htdocs/core/boxes/box_graph_nb_tickets_type.php
@@ -128,6 +128,11 @@ class box_graph_nb_tickets_type extends ModeleBoxes
 			}
 			$dataseries = array();
 			$data = array();
+			$data['COM'] = 0;
+			$data['HELP'] = 0;
+			$data['ISSUE'] = 0;
+			$data['REQUEST'] = 0;
+			$data['OTHER'] = 0;
 			$sql = "SELECT t.type_code, COUNT(t.type_code) as nb";
 			$sql .= " FROM " . MAIN_DB_PREFIX . "ticket as t";
 			$sql .= " WHERE t.fk_statut <> 8";
diff --git a/htdocs/core/boxes/box_graph_ticket_by_severity.php b/htdocs/core/boxes/box_graph_ticket_by_severity.php
index 252769abd0e..feec768446b 100644
--- a/htdocs/core/boxes/box_graph_ticket_by_severity.php
+++ b/htdocs/core/boxes/box_graph_ticket_by_severity.php
@@ -138,6 +138,10 @@ class box_graph_ticket_by_severity extends ModeleBoxes
 
 			$dataseries = array();
 			$data = array();
+			$data['LOW'] = 0;
+			$data['NORMAL'] = 0;
+			$data['HIGH'] = 0;
+			$data['BLOCKING'] = 0;
 			$sql = "SELECT t.severity_code, COUNT(t.severity_code) as nb";
 			$sql .= " FROM " . MAIN_DB_PREFIX . "ticket as t";
 			$sql .= " WHERE t.fk_statut <> 8";