diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 3c91de75304..8ce44bb9787 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -8937,7 +8937,9 @@ class Form
 					print '<table class="noborder">';
 					print '<tr>';
 					print '<td>' . $langs->trans("Ref") . '</td>';
-					print '<td><input type="text" name="reftolinkto" value="' . dol_escape_htmltag(GETPOST('reftolinkto', 'alpha')) . '">&nbsp;<input type="submit" class="button valignmiddle" value="' . $langs->trans('ToLink') . '">&nbsp;<input type="submit" class="button" name="cancel" value="' . $langs->trans('Cancel') . '"></td>';
+					print '<td><input type="text" name="reftolinkto" value="' . dol_escape_htmltag(GETPOST('reftolinkto', 'alpha')) . '">&nbsp;';
+					print '<input type="submit" class="button smallpaddingimp valignmiddle" value="' . $langs->trans('ToLink') . '">&nbsp;';
+					print '<input type="submit" class="button smallpaddingimp" name="cancel" value="' . $langs->trans('Cancel') . '"></td>';
 					print '</tr>';
 					print '</table>';
 					print '</form>';