diff --git a/classes/module/Module.php b/classes/module/Module.php
index ccde9b6cd..8aa996b91 100644
--- a/classes/module/Module.php
+++ b/classes/module/Module.php
@@ -857,7 +857,7 @@ abstract class ModuleCore
 		if (!Validate::isModuleName($module_name))
 		{
 			if (_PS_MODE_DEV_)
-				die(Tools::displayError());
+				die(Tools::displayError($module_name.' is not a valid module name.'));
 			return false;
 		}