diff --git a/htdocs/categories/viewcat.php b/htdocs/categories/viewcat.php
index ca538d2a4f992..14bf8e8092126 100644
--- a/htdocs/categories/viewcat.php
+++ b/htdocs/categories/viewcat.php
@@ -629,7 +629,7 @@
 				print '<table class="noborder centpercent">';
 				print '<tr class="liste_titre"><td>';
 				print $langs->trans("AddCustomerIntoCategory").' &nbsp;';
-				$filter = '(s.client:IN:1,3) OR (s.client:IN:2,3)';
+				$filter = '(s.client:IN:1,2,3)';
 				print $form->select_company('', 'elemid', $filter);
 				print '<input type="submit" class="reposition button buttongen" name="addintocategory" value="'.$langs->trans("ClassifyInCategory").'"></td>';
 				print '</tr>';