diff --git a/paddle/fluid/inference/utils/CMakeLists.txt b/paddle/fluid/inference/utils/CMakeLists.txt
index a7b239731b9a2e876c16d9ff84dfb8ac3df7b82e..c43eaf7f9849ee4a88ed95bdb8b6966da8760435 100644
--- a/paddle/fluid/inference/utils/CMakeLists.txt
+++ b/paddle/fluid/inference/utils/CMakeLists.txt
@@ -1,4 +1,4 @@
 cc_library(benchmark SRCS benchmark.cc DEPS enforce)
 cc_test(test_benchmark SRCS benchmark_tester.cc DEPS benchmark)
-#cc_binary(visualizer SRCS visualizer.cc DEPS analysis
-#    paddle_pass_builder ir_pass_manager pass graph_viz_pass analysis_passes)
+cc_binary(visualizer SRCS visualizer.cc DEPS analysis
+    paddle_pass_builder ir_pass_manager pass graph_viz_pass analysis_passes)
diff --git a/python/paddle/fluid/tests/unittests/test_imperative_ptb_rnn.py b/python/paddle/fluid/tests/unittests/test_imperative_ptb_rnn.py
index 5877e91f92e642e69265104c6728cd9bd41c41cd..afe990e74ff96dfbca4f335b561f9bbe7d295246 100644
--- a/python/paddle/fluid/tests/unittests/test_imperative_ptb_rnn.py
+++ b/python/paddle/fluid/tests/unittests/test_imperative_ptb_rnn.py
@@ -268,9 +268,6 @@ class TestImperativePtbRnn(unittest.TestCase):
                 sgd.minimize(dy_loss)
                 for param in ptb_model.parameters():
                     dy_param_updated[param.name] = param._numpy()
-                # print("dy_loss is {}".format(dy_loss._numpy()))
-                # print("last_hidden is {}".format(last_hidden._numpy()))
-                # print("last_cell is {}".format(last_cell._numpy()))
 
         with new_program_scope():
             fluid.default_startup_program().random_seed = seed