diff --git a/classes/module/ModuleGraph.php b/classes/module/ModuleGraph.php
index f74e66146..190787bfe 100644
--- a/classes/module/ModuleGraph.php
+++ b/classes/module/ModuleGraph.php
@@ -77,6 +77,7 @@ abstract class ModuleGraphCore extends Module
             if (is_callable(array($this, 'setDayValues'))) {
                 $this->setDayValues($layers);
             }
+            $this->_titles['x'][] = $this->l('Time');
         }
         // If the granularity is inferior to 1 month
         // @TODO : change to manage 28 to 31 days
@@ -110,6 +111,7 @@ abstract class ModuleGraphCore extends Module
             if (is_callable(array($this, 'setMonthValues'))) {
                 $this->setMonthValues($layers);
             }
+            $this->_titles['x'][] = $this->l('Date');
         }
         // If the granularity is less than 1 year
         elseif (strtotime('-1 year', strtotime($this->_employee->stats_date_to)) < strtotime($this->_employee->stats_date_from)) {
@@ -141,6 +143,7 @@ abstract class ModuleGraphCore extends Module
             if (is_callable(array($this, 'setYearValues'))) {
                 $this->setYearValues($layers);
             }
+            $this->_titles['x'][] = $this->l('Month');
         }
         // If the granularity is greater than 1 year
         else {
@@ -163,6 +166,7 @@ abstract class ModuleGraphCore extends Module
             if (is_callable(array($this, 'setAllTimeValues'))) {
                 $this->setAllTimeValues($layers);
             }
+            $this->_titles['x'][] = $this->l('Year');
         }
     }
 
diff --git a/modules/statsproduct/statsproduct.php b/modules/statsproduct/statsproduct.php
index 2ec1bdce5..8a7051421 100644
--- a/modules/statsproduct/statsproduct.php
+++ b/modules/statsproduct/statsproduct.php
@@ -358,7 +358,6 @@ class StatsProduct extends ModuleGraph
                 }
                 $this->_titles['main'][] = $this->l('Room nights');
                 $this->_titles['main'][] = $this->l('Views (x100)');
-                $this->_titles['x'] = $this->l('Date');
                 $this->_titles['y'] = $this->l('Room nights, Views (x100)');
                 $this->_formats['y'] = 'd';
 
diff --git a/modules/statsregistrations/statsregistrations.php b/modules/statsregistrations/statsregistrations.php
index 430ddc07c..ea6ff5750 100644
--- a/modules/statsregistrations/statsregistrations.php
+++ b/modules/statsregistrations/statsregistrations.php
@@ -190,7 +190,6 @@ class StatsRegistrations extends ModuleGraph
 
     protected function setYearValues($layers)
     {
-        $this->_titles['x'][] = $this->l('Month');
         $result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($this->query.$this->getDate());
         foreach ($result as $row) {
             $mounth = (int)substr($row['date_add'], 5, 2);
@@ -203,7 +202,6 @@ class StatsRegistrations extends ModuleGraph
 
     protected function setMonthValues($layers)
     {
-        $this->_titles['x'][] = $this->l('Date');
         $result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($this->query.$this->getDate());
         foreach ($result as $row) {
             $this->_values[(int)Tools::substr($row['date_add'], 8, 2)]++;
@@ -212,7 +210,6 @@ class StatsRegistrations extends ModuleGraph
 
     protected function setDayValues($layers)
     {
-        $this->_titles['x'][] = $this->l('Time');
         $result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($this->query.$this->getDate());
         foreach ($result as $row) {
             $this->_values[(int)Tools::substr($row['date_add'], 11, 2)]++;