diff --git a/python/paddle/fluid/tests/unittests/test_dataset.py b/python/paddle/fluid/tests/unittests/test_dataset.py
index a6cd32bd6158eef01b2e7d0780d260b1049f38ab..f7580e5c2d84523a71c0779a3f9e7eb71e2a3b5c 100644
--- a/python/paddle/fluid/tests/unittests/test_dataset.py
+++ b/python/paddle/fluid/tests/unittests/test_dataset.py
@@ -21,7 +21,7 @@ import unittest
 
 
 class TestDataset(unittest.TestCase):
-    """  TestCases for Dataset. """
+    """  TestCases for Dataset """
     def test_dataset_create(self):
         """ Testcase for dataset create """
         try: