diff --git a/src/DDSERVICES/SOAP/DDserverWeb.php b/src/DDSERVICES/SOAP/DDserverWeb.php
index b4a5b23..8f16e1c 100644
--- a/src/DDSERVICES/SOAP/DDserverWeb.php
+++ b/src/DDSERVICES/SOAP/DDserverWeb.php
@@ -145,9 +145,10 @@ function getDatasetsModificationDates()
 
               // Modification date
               $cmd = "/opt/tools/DDServer/bin/GetModificationDate ".$timesFile;
-			        exec($cmd, $output, $result_code);
-              if ($result_code === 0)
-				        $modificationDate = $output[0];
+              $output = array();
+              exec($cmd, $output, $result_code);
+              if ($result_code == 0)
+                $modificationDate = $output[0];
               if (!isset($releaseDate))
                 $releaseDate = $modificationDate;
 
--
libgit2 0.21.2