diff --git a/application/helpers/admin/statistics_helper.php b/application/helpers/admin/statistics_helper.php
index ad10b05a456..838fefebbf7 100644
--- a/application/helpers/admin/statistics_helper.php
+++ b/application/helpers/admin/statistics_helper.php
@@ -2165,6 +2165,7 @@ protected function displayResults($outputs, $results, $rt, $outputType, $surveyi
         $sDatabaseType      = Yii::app()->db->getDriverName();
         $tempdir            = Yii::app()->getConfig("tempdir");
         $astatdata          = array();
+        $TotalIncomplete    = 0;
 
         $sColumnName = null;
 
@@ -3400,6 +3401,11 @@ protected function displayResults($outputs, $results, $rt, $outputType, $surveyi
                 // Labels for graphs
                 $iMaxLabelLength = 0;
 
+                // add "Not completed or Not displayed" label if missing
+                if ($_POST['noncompleted'] == 0 && count($labels) > count($aGraphLabels)){
+                    $aGraphLabels[] = gT("Not completed or Not displayed");
+                }
+
                 foreach ($aGraphLabels as $key => $label) {
                     $cleanLabel = $label;
                     $cleanLabel = viewHelper::flatEllipsizeText($cleanLabel, true, 20);