diff --git a/keras2onnx/ke2onnx/main.py b/keras2onnx/ke2onnx/main.py
index e07b2595..ab761810 100644
--- a/keras2onnx/ke2onnx/main.py
+++ b/keras2onnx/ke2onnx/main.py
@@ -4,8 +4,7 @@
 # license information.
 ###############################################################################
 import numpy as np
-from ..proto import keras, is_tf_keras, is_keras_older_than
-from ..proto.tfcompat import is_tf2
+from ..proto import keras, is_tf_keras, is_keras_older_than, is_tensorflow_later_than
 from ..common import with_variable, k2o_logger
 from ..common.onnx_ops import OnnxOperatorBuilder
 
@@ -261,7 +260,7 @@ def convert_keras_training_only_layer(scope, operator, container):
         _adv_activations.ReLU: convert_keras_advanced_activation,
     })
 
-if is_tf_keras and is_tf2:
+if is_tf_keras and is_tensorflow_later_than("1.14.0"):
     keras_layer_to_operator.update({
         _layer.recurrent.GRU: convert_keras_gru,
         _layer.recurrent.LSTM: convert_keras_lstm,
diff --git a/tests/test_layers.py b/tests/test_layers.py
index 591dfae4..3df6954b 100644
--- a/tests/test_layers.py
+++ b/tests/test_layers.py
@@ -2122,7 +2122,6 @@ def test_bidirectional_seqlen_none(runner, rnn_class):
         assert runner(onnx_model.graph.name, onnx_model, x, expected)
 
 
-@pytest.mark.skipif(is_tf2, reason='TODO')
 @pytest.mark.parametrize("rnn_class", RNN_CLASSES)
 def test_rnn_state_passing(runner, rnn_class):
     input1 = Input(shape=(None, 5))