diff --git a/webui/controller/health/worker.php b/webui/controller/health/worker.php
index 5afa0f23..8932aa00 100644
--- a/webui/controller/health/worker.php
+++ b/webui/controller/health/worker.php
@@ -66,8 +66,8 @@ class ControllerHealthWorker extends Controller {
       list($archivesizeraw, $this->data['counters']) = $this->model_stat_counter->get_counters();
  
       $oldest_record_timestamp = $this->model_health_health->get_oldest_record_ts();
-      $total_number_days = round( (time() - $oldest_record_timestamp) / 86400 );
-      
+      $total_number_days = round( (time() - $this->model_health_health->get_first_email_arrival_ts()) / 86400 );
+
       $this->data['archive_size'] = nice_size($archivesizeraw, ' ');
 
       $this->data['prefix'] = '';
diff --git a/webui/model/health/health.php b/webui/model/health/health.php
index 9cf28f76..5ee5f12d 100644
--- a/webui/model/health/health.php
+++ b/webui/model/health/health.php
@@ -181,6 +181,15 @@ class ModelHealthHealth extends Model {
    }
 
 
+   public function get_first_email_arrival_ts() {
+      $query = $this->db->query("SELECT `arrived`  FROM " . TABLE_META . " ORDER BY id ASC LIMIT 1");
+
+      if(isset($query->row)) { return $query->row['arrived']; }
+
+      return time();
+   }
+
+
    public function get_sphinx_size($directory = DIR_SPHINX) {
       $dirSize=0;