diff --git a/htdocs/admin/dolistore/class/dolistore.class.php b/htdocs/admin/dolistore/class/dolistore.class.php
index 553ce2e54e0..e82eec71fec 100644
--- a/htdocs/admin/dolistore/class/dolistore.class.php
+++ b/htdocs/admin/dolistore/class/dolistore.class.php
@@ -17,7 +17,10 @@
  */
 
 include_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
-include_once DOL_DOCUMENT_ROOT.'/admin/dolistore/class/PSWebServiceLibrary.class.php';
+if (! class_exists('PrestaShopWebservice')) // We keep this because some modules add this lib too into a different path. This is to avoid "Cannot declare class PrestaShopWebservice" errors.
+{
+    include_once DOL_DOCUMENT_ROOT.'/admin/dolistore/class/PSWebServiceLibrary.class.php';
+}
 
 
 /**