diff --git a/install/install_db.php b/install/install_db.php
index 4791a1807..34195e733 100644
--- a/install/install_db.php
+++ b/install/install_db.php
@@ -517,6 +517,7 @@ fwrite($f, $str);
 fclose($f);
 
 @copy('./logo_img', $data_path.'/common/logo_img');
+@copy('./logo_img', $data_path.'/common/mobile_logo_img');
 @copy('./main_img', $data_path.'/common/main_img');
 
 @copy('./company_h', $data_path.'/content/company_h');