diff --git a/python/paddle/fluid/tests/unittests/mkldnn/test_prelu_mkldnn_op.py b/python/paddle/fluid/tests/unittests/mkldnn/test_prelu_mkldnn_op.py
index c1109091b6ddf..ea08487a3f8a1 100644
--- a/python/paddle/fluid/tests/unittests/mkldnn/test_prelu_mkldnn_op.py
+++ b/python/paddle/fluid/tests/unittests/mkldnn/test_prelu_mkldnn_op.py
@@ -128,23 +128,13 @@ def test_check_output(self):
                 self.check_output_with_place(core.CPUPlace())
 
         def test_check_grad(self):
-            if core.is_compiled_with_cuda():
-                self.skipTest(
-                    "OneDNN doesn't support bf16 with CUDA, skipping UT" +
-                    self.__class__.__name__)
-            elif not core.supports_bfloat16():
-                self.skipTest("Core doesn't support bf16, skipping UT" +
-                              self.__class__.__name__)
-            else:
-                self.calculate_grads()
-                self.check_grad_with_place(
-                    core.CPUPlace(), ["X", "Alpha"],
-                    "Out",
-                    check_dygraph=False,
-                    user_defined_grads=[self.dx, self.dalpha],
-                    user_defined_grad_outputs=[
-                        convert_float_to_uint16(self.dout)
-                    ])
+            self.calculate_grads()
+            self.check_grad_with_place(
+                core.CPUPlace(), ["X", "Alpha"],
+                "Out",
+                check_dygraph=False,
+                user_defined_grads=[self.dx, self.dalpha],
+                user_defined_grad_outputs=[convert_float_to_uint16(self.dout)])
 
     cls_name = "{0}_{1}".format(parent.__name__, "BF16")
     TestPReluBF16OneDNNOp.__name__ = cls_name