diff --git a/htdocs/public/error-401.php b/htdocs/public/error-401.php
new file mode 100644
index 00000000000..d64663fbcfa
--- /dev/null
+++ b/htdocs/public/error-401.php
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+  <head>
+    <title>Dolibarr 401 error page</title>
+  </head>
+
+  <body>
+    <h1>Error</h1>
+
+    <br>
+    Sorry. You are not allowed to access this resource.
+
+    <br>
+    You come from <?php print $_SERVER["HTTP_REFERER"] ?>.
+
+    <hr>
+  </body>
+</html>
diff --git a/htdocs/public/error-404.php b/htdocs/public/error-404.php
index 5ffaf7fa7ca..2930baead76 100644
--- a/htdocs/public/error-404.php
+++ b/htdocs/public/error-404.php
@@ -1,23 +1,18 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
   <head>
-    <title>Dolibarr</title>
+    <title>Dolibarr 404 error page</title>
   </head>
 
   <body>
-    <h2>Erreur 404</h2>
+    <h2>Error</h2>
 
     <br>
-    La page demandée n'existe pas :
+    You requested a page that does not exists.
 
     <br>
-    Vous venez de <?php print $_SERVER["HTTP_REFERER"] ?>.
+    You come from <?php print $_SERVER["HTTP_REFERER"] ?>.
 
     <hr>
-    <!-- Created: Mon Jun 24 13:51:43 CEST 2002 -->
-    <!-- hhmts start -->
-    Last modified: Mon Jun 24 13:51:51 CEST 2002
-    <!-- hhmts end -->
-
   </body>
 </html>
