diff --git a/src/test/java/de/ids_mannheim/korap/index/TestRelationIndex.java b/src/test/java/de/ids_mannheim/korap/index/TestRelationIndex.java
index 4bc4355..74c8cfe 100644
--- a/src/test/java/de/ids_mannheim/korap/index/TestRelationIndex.java
+++ b/src/test/java/de/ids_mannheim/korap/index/TestRelationIndex.java
@@ -328,6 +328,9 @@
 		
 	}
 	
+	/** Match left return left
+	 *  Match right return right
+	 * */
 	@Test
     public void testCase10() throws IOException {
         ki.addDoc(createFieldDoc2());