diff --git a/chainsyncer/driver.py b/chainsyncer/driver.py
index da16d19..f266edb 100644
--- a/chainsyncer/driver.py
+++ b/chainsyncer/driver.py
@@ -118,7 +118,8 @@ class SyncDriver:
                 time.sleep(self.yield_delay)
             if self.post_callback != None:
                 self.post_callback()
-    
+   
+            logg.debug('fooo')
             if self.store.target > -1 and block.number >= self.store.target:
                 self.running = False
 
diff --git a/tests/test_session.py b/tests/test_session.py
index 21593da..0e4b04e 100644
--- a/tests/test_session.py
+++ b/tests/test_session.py
@@ -117,7 +117,7 @@ class TestFilter(unittest.TestCase):
 
 
     def test_driver_interrupt_sync(self):
-        drv = MockDriver(self.store, interrupt_block=1)
+        drv = MockDriver(self.store, interrupt_block=1, target=2)
         generator = MockBlockGenerator()
         generator.generate([3, 1, 2], driver=drv)
 
@@ -130,9 +130,12 @@ class TestFilter(unittest.TestCase):
         store = SyncFsStore(self.path, state_event_callback=state_event_handler, filter_state_event_callback=filter_state_event_handler)
         fltr_one = MockFilter('foo')
         store.register(fltr_one)
-        drv = MockDriver(store, target=1)
+        drv = MockDriver(store)
         generator.apply(drv, offset=1)
-        drv.run(self.conn, interval=0.1)
+
+        with self.assertRaises(SyncDone) as e:
+            drv.run(self.conn, interval=0.1)
+            self.assertEqual(e, 2)
 
 
 if __name__ == '__main__':