diff --git a/README.md b/README.md
index ca6f94e..de331a3 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Documentation
 -------------
 
 * add usage scenario
+* complete documentation to precise one level dependencies for create and find methods
 * clarify tree of rights
 * clarify why the dependencies need to be managed in the service (to avoid to break the
 CRUD model, *i.e.* reppsitory methods are specialised to load the one-level 
diff --git a/src/test/java/fr/plil/sio/persistence/jdbc/GroupServiceTest.java b/src/test/java/fr/plil/sio/persistence/jdbc/GroupServiceTest.java
index fe59d40..36bf728 100644
--- a/src/test/java/fr/plil/sio/persistence/jdbc/GroupServiceTest.java
+++ b/src/test/java/fr/plil/sio/persistence/jdbc/GroupServiceTest.java
@@ -127,8 +127,8 @@ public class GroupServiceTest extends AbstractServiceSupport {
         assertEquals(0, group.getRights().size());
     }
 
-    @Test
-    public void testRemoveRightIfNotPresent() {
+    @Test(expected = IllegalArgumentException.class)
+    public void testRemoveRightIfNotInDatabase() {
         Right right = new Right();
         right.setName("not-a-right");
         assertFalse(groupService.removeRight("group", right));
--
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