diff --git a/htdocs/comm/action/card.php b/htdocs/comm/action/card.php
index ed0ad19b96d..44d6b000efe 100644
--- a/htdocs/comm/action/card.php
+++ b/htdocs/comm/action/card.php
@@ -558,7 +558,7 @@ if ($action == 'update')
                         $error++;
                         $object->error = $langs->trans('ErrorResourcesAlreadyInUse') . ' : ';
                         while ($obj = $db->fetch_object($resql)) {
-                            $object->error .= '<br /> - ' . $langs->trans('ErrorResourceUseInEvent', $obj->r_ref, $obj->ac_label . ' [' . $obj->ac_id . ']');
+                            $object->error .= '<br> - ' . $langs->trans('ErrorResourceUseInEvent', $obj->r_ref, $obj->ac_label . ' [' . $obj->ac_id . ']');
                         }
                         $object->errors[] = $object->error;
                     }
diff --git a/htdocs/resource/element_resource.php b/htdocs/resource/element_resource.php
index 07bcdb3fd99..bb9a54a9bf0 100644
--- a/htdocs/resource/element_resource.php
+++ b/htdocs/resource/element_resource.php
@@ -151,7 +151,7 @@ if (empty($reshook))
                         $error++;
                         $objstat->error = $langs->trans('ErrorResourcesAlreadyInUse') . ' : ';
                         while ($obj = $db->fetch_object($resql)) {
-                            $objstat->error .= '<br /> - ' . $langs->trans('ErrorResourceUseInEvent', $obj->r_ref, $obj->ac_label . ' [' . $obj->ac_id . ']');
+                            $objstat->error .= '<br> - ' . $langs->trans('ErrorResourceUseInEvent', $obj->r_ref, $obj->ac_label . ' [' . $obj->ac_id . ']');
                         }
                         $objstat->errors[] = $objstat->error;
                     }
@@ -232,7 +232,7 @@ if (empty($reshook))
                         $error++;
                         $object->error = $langs->trans('ErrorResourcesAlreadyInUse') . ' : ';
                         while ($obj = $db->fetch_object($resql)) {
-                            $object->error .= '<br /> - ' . $langs->trans('ErrorResourceUseInEvent', $obj->r_ref, $obj->ac_label . ' [' . $obj->ac_id . ']');
+                            $object->error .= '<br> - ' . $langs->trans('ErrorResourceUseInEvent', $obj->r_ref, $obj->ac_label . ' [' . $obj->ac_id . ']');
                         }
                         $object->errors[] = $objstat->error;
                     }