Add missing @Override
diff --git a/src/test/java/org/apache/commons/configuration2/web/TestServletContextConfiguration.java b/src/test/java/org/apache/commons/configuration2/web/TestServletContextConfiguration.java
index 7726472..7769c0e 100644
--- a/src/test/java/org/apache/commons/configuration2/web/TestServletContextConfiguration.java
+++ b/src/test/java/org/apache/commons/configuration2/web/TestServletContextConfiguration.java
@@ -109,6 +109,7 @@
         assertThrows(UnsupportedOperationException.class, super::testClearProperty);
     }
 
+    @Override
     @Test
     public void testContainsValue() {
         assertFalse(getConfiguration().containsValue(null));