diff --git a/htdocs/core/modules/modProjet.class.php b/htdocs/core/modules/modProjet.class.php
index 6ac8b877ad6..ff4adeb1986 100644
--- a/htdocs/core/modules/modProjet.class.php
+++ b/htdocs/core/modules/modProjet.class.php
@@ -300,8 +300,8 @@ class modProjet extends DolibarrModules
         	}
         }
         // End add extra fields
-		$this->export_fields_array[$r]=array_merge($this->export_fields_array[$r], array('ptt.task_date'=>'TaskTimeDate','ptt.task_duration'=>"TimesSpent",'ptt.fk_user'=>"TaskTimeUser",'ptt.note'=>"TaskTimeNote"));
-        $this->export_entities_array[$r]=array_merge($this->export_entities_array[$r], array('ptt.task_date'=>'task_time','ptt.task_duration'=>"task_time",'ptt.fk_user'=>"task_time",'ptt.note'=>"task_time"));
+		$this->export_fields_array[$r]=array_merge($this->export_fields_array[$r], array('ptt.rowid'=>'IdTaskTime','ptt.task_date'=>'TaskTimeDate','ptt.task_duration'=>"TimesSpent",'ptt.fk_user'=>"TaskTimeUser",'ptt.note'=>"TaskTimeNote"));
+        $this->export_entities_array[$r]=array_merge($this->export_entities_array[$r], array('ptt.rowid'=>'task_time','ptt.task_date'=>'task_time','ptt.task_duration'=>"task_time",'ptt.fk_user'=>"task_time",'ptt.note'=>"task_time"));
 
         $this->export_sql_start[$r]='SELECT DISTINCT ';
 		$this->export_sql_end[$r]  =' FROM '.MAIN_DB_PREFIX.'projet as p';
diff --git a/htdocs/langs/en_US/projects.lang b/htdocs/langs/en_US/projects.lang
index d9fecb40ad4..4ed6ccfc2f5 100644
--- a/htdocs/langs/en_US/projects.lang
+++ b/htdocs/langs/en_US/projects.lang
@@ -175,6 +175,7 @@ ProjectWeightedOppAmountOfProjectsByMonth=Weighted amount of opportunities by mo
 ProjectOpenedProjectByOppStatus=Opened project/lead by opportunity status
 ProjectsStatistics=Statistics on projects/leads
 TaskAssignedToEnterTime=Task assigned. Entering time on this task should be possible.
+IdTaskTime=Id task time
 OpenedProjectsByThirdparties=Opened projects by thirdparties
 OpportunityTotalAmount=Opportunities total amount
 OpportunityPonderatedAmount=Opportunities weighted amount