diff --git a/unittests/test_helpwnd.py b/unittests/test_helpwnd.py
index bbe0f4f7..35f61a2e 100644
--- a/unittests/test_helpwnd.py
+++ b/unittests/test_helpwnd.py
@@ -20,7 +20,7 @@ class helpwnd_Tests(wtc.WidgetTestCase):
         hc.AddBook(os.path.join(helpPath, 'another.hhp'))
 
         self.frame.SendSizeEvent()
-        self.myYield()
+        self.waitFor(50)
         
         
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