diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 1f7c08c8d7a..97ad5d58969 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -8258,7 +8258,7 @@ function dolGetButtonTitle($label, $helpText = '', $iconClass = 'fa fa-file', $u
         $attr['class'] .= ' classfortooltip';
     }
 
-    if(empty($id)){
+    if(!empty($id)){
         $attr['id'] = $id;
     }