diff --git a/python/paddle/fluid/tests/unittests/test_layers.py b/python/paddle/fluid/tests/unittests/test_layers.py
index e59f56b455095293bb20ceb95e40d74c5c192cba..92c60da71546d10155eede83ed19afab9c678beb 100644
--- a/python/paddle/fluid/tests/unittests/test_layers.py
+++ b/python/paddle/fluid/tests/unittests/test_layers.py
@@ -252,7 +252,7 @@ class TestBook(unittest.TestCase):
         program = Program()
         with program_guard(program):
             data = layers.data(
-                name="data",
+                name='data',
                 shape=[32, 9, 6, 6],
                 append_batch_size=False,
                 dtype='float32')