diff --git a/tests/pecantest/test/controllers/ws.py b/tests/pecantest/test/controllers/ws.py
index 410bbef..42b6b1f 100644
--- a/tests/pecantest/test/controllers/ws.py
+++ b/tests/pecantest/test/controllers/ws.py
@@ -49,6 +49,8 @@ class AuthorsController(RestController):
 
     @wsme.pecan.wsexpose(Author, int)
     def get(self, id):
+        if id == 999:
+            raise wsme.exc.ClientSideError('Wrong ID')
         author = Author()
         author.id = id
         author.firstname = u"aname"
diff --git a/tests/pecantest/test/tests/test_ws.py b/tests/pecantest/test/tests/test_ws.py
index 03457e9..01e0994 100644
--- a/tests/pecantest/test/tests/test_ws.py
+++ b/tests/pecantest/test/tests/test_ws.py
@@ -24,3 +24,14 @@ class TestWS(FunctionalTest):
         print a
         assert '<id>1</id>' in a.body
         assert '<firstname>aname</firstname>' in a.body
+
+    def test_clientsideerror(self):
+        res = self.app.get(
+            '/authors/999.json',
+            expect_errors=True
+        )
+        print res
+        assert res.status == 400
+        a = json.loads(res.body)
+        print a
+        assert a['faultcode'] == 'Client'