diff --git a/test/py/TestClient.py b/test/py/TestClient.py
index 7e3daf2..3a74353 100755
--- a/test/py/TestClient.py
+++ b/test/py/TestClient.py
@@ -158,6 +158,7 @@
     self.assertEqual(self.client.testDouble(-5.235098235), -5.235098235)
     self.assertEqual(self.client.testDouble(0), 0)
     self.assertEqual(self.client.testDouble(-1), -1)
+    self.assertEqual(self.client.testDouble(-0.000341012439638598279), -0.000341012439638598279)
 
   def testBinary(self):
     if isinstance(self, JSONTest):