diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index 1b64f0d9a66..e974532f545 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -1465,6 +1465,17 @@ class Task extends CommonObject
 		if (empty($this->timespent_datehour)) $this->timespent_datehour = $this->timespent_date;
 		if (isset($this->timespent_note)) $this->timespent_note = trim($this->timespent_note);
 
+        if (! empty($conf->global->PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS)) {
+            require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';
+            $restrictBefore = dol_time_plus_duree(dol_now(), - $conf->global->PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS, 'm');
+
+            if ($this->timespent_date < $restrictBefore) {
+                $this->error = $langs->trans('TimeRecordingRestrictedToNMonthsBack', $conf->global->PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS);
+                $this->errors[] = $this->error;
+                return -1;
+            }
+        }
+
 		$this->db->begin();
 
 		$sql = "UPDATE ".MAIN_DB_PREFIX."projet_task_time SET";
@@ -1530,6 +1541,17 @@ class Task extends CommonObject
 
 		$error = 0;
 
+        if (! empty($conf->global->PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS)) {
+            require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';
+            $restrictBefore = dol_time_plus_duree(dol_now(), - $conf->global->PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS, 'm');
+
+            if ($this->timespent_date < $restrictBefore) {
+                $this->error = $langs->trans('TimeRecordingRestrictedToNMonthsBack', $conf->global->PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS);
+                $this->errors[] = $this->error;
+                return -1;
+            }
+        }
+
 		$this->db->begin();
 
 		$sql = "DELETE FROM ".MAIN_DB_PREFIX."projet_task_time";