diff --git a/tests/test_zoo.py b/tests/test_zoo.py
index 81a3914..1f8e543 100644
--- a/tests/test_zoo.py
+++ b/tests/test_zoo.py
@@ -66,7 +66,11 @@ def test_zoo_clf(model_type_name):
     assert arch.model == arch_dict["model"]
 
 
-def test_basic_rec():
+@pytest.mark.parametrize("network_type", [
+    "gru",
+    "lstm",
+])
+def test_basic_rec(network_type):
     seq_len = 10
     feat_dim = 2
     output_dim = 1
@@ -75,7 +79,7 @@ def test_basic_rec():
         hidden_dim=2,
         output_dim=output_dim,
         n_layers=1,
-        network_type="gru")
+        network_type=network_type)
     model = arch.build()
     assert model is not None
 
diff --git a/tsgm/models/architectures/zoo.py b/tsgm/models/architectures/zoo.py
index c02baad..821e709 100644
--- a/tsgm/models/architectures/zoo.py
+++ b/tsgm/models/architectures/zoo.py
@@ -477,7 +477,7 @@ def __init__(
         self.n_layers = n_layers
 
         self.network_type = network_type.lower()
-        assert self.network_type in ["gru", "lstm", "lstmLN"]
+        assert self.network_type in ["gru", "lstm"]
 
         self._name = name
 
@@ -493,11 +493,6 @@ def _rnn_cell(self) -> keras.layers.Layer:
         # LSTM
         elif self.network_type == "lstm":
             cell = keras.layers.LSTMCell(self.hidden_dim, activation="tanh")
-        # LSTM Layer Normalization
-        elif self.network_type == "lstmLN":
-            cell = keras.layers.LayerNormLSTMCell(
-                num_units=self.hidden_dim, activation="tanh"
-            )
         return cell
 
     def _make_network(self, model: keras.models.Model, activation: str, return_sequences: bool) -> keras.models.Model: