diff --git a/workflow/engine/classes/model/OutputDocument.php b/workflow/engine/classes/model/OutputDocument.php
index 019ddbb30..5b7cbd51f 100755
--- a/workflow/engine/classes/model/OutputDocument.php
+++ b/workflow/engine/classes/model/OutputDocument.php
@@ -1117,14 +1117,14 @@ class OutputDocument extends BaseOutputDocument
             unlink(PATH_OUTPUT_FILE_DIRECTORY . $sFilename . '.html');
         } catch (Exception $e) {
             if ($e->getMessage() == 'ID_OUTPUT_NOT_GENERATE') {
-                include_once ("classes/model/AppDocument.php");
-                $dataDocument = explode('_',$sFilename);
-                $oAppDocument = new AppDocument ();
-                if (isset($dataDocument['1'])) {
-                    $oAppDocument->remove($dataDocument['0'], $dataDocument['1']);
-                    G::SendTemporalMessage (G::loadTranslation("ID_OUTPUT_NOT_GENERATE"), "Error");    
+                include_once 'classes/model/AppDocument.php';
+                $dataDocument = explode('_', $sFilename);
+                if (!isset($dataDocument[1])) {
+                  $dataDocument[1] = 1;
                 }
-                
+                $oAppDocument = new AppDocument();
+                $oAppDocument->remove($dataDocument[0], $dataDocument[1]);
+                G::SendTemporalMessage(G::LoadTranslation('ID_OUTPUT_NOT_GENERATE'), 'Error');
             }
         }
     }