diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 19b39fd776d..d726c84e2ae 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -8123,7 +8123,7 @@ function dolGetButtonAction($label, $html = '', $actionType = 'default', $url =
         $attr['href'] = '';
     }
 
-    if(empty($id)){
+    if(!empty($id)){
         $attr['id'] = $id;
     }