diff --git a/include/com/sun/star/uno/Sequence.h b/include/com/sun/star/uno/Sequence.h
index 1e6d2b0e102b..19a73eda9f71 100644
--- a/include/com/sun/star/uno/Sequence.h
+++ b/include/com/sun/star/uno/Sequence.h
@@ -48,7 +48,7 @@ namespace uno
     @tparam E element type of sequence
 */
 template< class E >
-class Sequence
+class SAL_WARN_UNUSED Sequence
 {
     /** sequence handle
     */