diff --git a/python/paddle/fluid/tests/unittests/test_dygraph_mnist_fp16.py b/python/paddle/fluid/tests/unittests/test_dygraph_mnist_fp16.py
index 0a5d8e0cdd3f657a89785733710097ef0bf7fea9..0efc887384dbaad3309becaf132fcd466a042aaf 100644
--- a/python/paddle/fluid/tests/unittests/test_dygraph_mnist_fp16.py
+++ b/python/paddle/fluid/tests/unittests/test_dygraph_mnist_fp16.py
@@ -117,8 +117,6 @@ class MNIST(fluid.dygraph.Layer):
 
 
 class TestMnist(unittest.TestCase):
-    # FIXME(zcd): disable this random failed test temporally.
-    @unittest.skip("should fix this later")
     def test_mnist_fp16(self):
         if not fluid.is_compiled_with_cuda():
             return