diff --git a/htdocs/index.php b/htdocs/index.php
index 4f1027825e1..bfc471afa18 100644
--- a/htdocs/index.php
+++ b/htdocs/index.php
@@ -58,14 +58,14 @@ if (defined("MAIN_MOTD") && strlen(trim(MAIN_MOTD)))
 // Affiche warning répertoire install existe (si utilisateur admin)
 if ($user->admin && ! defined("MAIN_REMOVE_INSTALL_WARNING"))
 {
-    if (is_dir(DOL_DOCUMENT_ROOT."/install") && is_readable(DOL_DOCUMENT_ROOT."/install"))
-    {
-        $langs->load("other");
-        $message=$langs->trans("WarningInstallDirExists",DOL_DOCUMENT_ROOT."/install");
-        $message.=$langs->trans("WarningUntilDirRemoved",DOL_DOCUMENT_ROOT."/install");
+	if (is_dir(DOL_DOCUMENT_ROOT."/install") && is_readable(DOL_DOCUMENT_ROOT."/install") && is_executable(DOL_DOCUMENT_ROOT."/install"))
+  {
+  	$langs->load("other");
+    $message=$langs->trans("WarningInstallDirExists",DOL_DOCUMENT_ROOT."/install");
+    $message.=$langs->trans("WarningUntilDirRemoved",DOL_DOCUMENT_ROOT."/install");
 		print info_admin($message);
-        print "<br>\n";
-    }
+    print "<br>\n";
+  }
 }
 
 print '<table width="100%" class="notopnoleftnoright">';