diff --git a/src/MetadataExporterClass.cpp b/src/MetadataExporterClass.cpp
index f598119a6d2ee5cb31fb7da09622e230c34a1d0f..65ef7e536a933c6acaad21f08ae0ceb35739dc3d 100644
--- a/src/MetadataExporterClass.cpp
+++ b/src/MetadataExporterClass.cpp
@@ -844,7 +844,7 @@ void MetadataExporterClass::device_factory(const Tango::DevVarStringArray *devli
  *                and store them in the attribute list
  */
 //--------------------------------------------------------
-void MetadataExporterClass::attribute_factory(vector<Tango::Attr *> &att_list)
+void MetadataExporterClass::attribute_factory(vector<Tango::Attr *> &/*att_list*/)
 {
 	/*----- PROTECTED REGION ID(MetadataExporterClass::attribute_factory_before) ENABLED START -----*/